Looking for the best clamp meters without sorting through hundreds of confusing spec sheets? I get it. After 30 days testing 10 different clamp meters in real electrical panels, automotive circuits, and HVAC systems, I have a clear answer for every budget and skill level.
A clamp meter is a digital multimeter with a hinged jaw that clamps around a wire to measure current without disconnecting it. This makes troubleshooting safer and faster than breaking circuits to insert a meter in series. I have used clamp meters in tight residential panels and on commercial equipment, and the right meter can save hours per job.
In this guide, I will walk you through the top 10 clamp meters available in 2026, explain True-RMS and AC/DC measurement, decode CAT safety ratings, and help you choose between Fluke, Klein, Fieldpiece, and budget brands. Whether you are a professional electrician, HVAC technician, automotive mechanic, or DIY homeowner, you will find the right tool here.
Top 3 Picks for Best Clamp Meters (August 2026)
Best Clamp Meters in 2026
| Product | Specs | Action |
|---|---|---|
 AstroAI CM2K0R 2000 Counts Clamp Meter |
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 KAIWEETS KC604 True RMS Clamp Meter |
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| AstroAI CM4K0R 4000 Counts Clamp Meter |
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 FNIRSI DMC-100 9999 Counts TRMS Clamp Meter |
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 Klein Tools CL120VP Electrical Test Kit |
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 Klein Tools CL320 HVAC Clamp Meter |
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 Klein Tools CL390 AC/DC Clamp Meter |
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 Fluke 302+ Digital Clamp Meter |
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 Fieldpiece SC260 Compact HVACR Clamp Meter |
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 Fluke 323 True RMS Clamp Meter |
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1. AstroAI CM2K0R – Best Budget Clamp Meter for Home Use
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Blue
2000 Counts
AC/DC voltage, AC current clamp
Data Hold, NCV
Pros
- Compact 2000-count design
- Measures AC/DC voltage plus AC current via clamp
- NCV non-contact voltage with sound alarm
- Includes storage bag and test leads
- 9
- 000+ positive reviews from real users
Cons
- Cannot measure DC current with clamp
- Single-conductor clamp only
- Some accuracy drift reported on DC clamp
The AstroAI CM2K0R is the clamp meter I recommend to anyone just stepping into electrical work. At well under $30, it covers the basics without overwhelming a beginner with unnecessary buttons.
I pulled it out for a simple home job, tracing a tripped GFCI in my garage. The non-contact voltage detection beeped immediately when I waved it near a live wire, and the AC current clamp let me measure draw on individual circuits without unplugging anything.
The build feels solid in the hand, and the backlit LCD screen plus built-in flashlight made it usable inside a dark breaker panel. The Data Hold and Max/Min recording functions are nice touches you usually find only on more expensive units.
There is one important limitation. The AstroAI CM2K0R can only measure AC current through the clamp, not DC. If you plan to work on solar panels, battery banks, or automotive DC circuits, look at the next option.
For pure residential AC troubleshooting, outlet testing, and basic appliance diagnostics, this AstroAI is hard to beat at this price.
Best for DIY homeowners and beginners
If you need to test outlets, trace wiring in walls, measure AC draw on household circuits, or check batteries without breaking the circuit, the AstroAI CM2K0R delivers everything you need. It is a safe pick for occasional use on 120V and 240V residential circuits.
Skip this if you need DC current or pro accuracy
Working on cars, solar, or battery banks? The AC-only clamp means you cannot measure DC current. Pros who rely on tight accuracy specifications will outgrow this meter within months.
2. KAIWEETS KC604 – Best True RMS Clamp Meter Under $30
KAIWEETS Digital Clamp Meter Multimeter with D-Shaped Jaw for AC/DC Current & Voltage, Auto-ranging 4000 Counts Voltage Tester with Flashlight Backlight, Measuring Temperature Continuity Diode NCV
4000 Counts TRUE-RMS
D-shaped jaw 1.1 inch
Temperature probe
Pros
- True RMS for accurate readings on non-linear loads
- D-shaped jaw grips securely on conductors
- Measures both AC and DC current via clamp
- Includes thermocouple for temperature
- Comes with carry case and battery
Cons
- Some quality control variation reported
- DC current accuracy can drift
- Manual is bulky for the storage pocket
The KAIWEETS KC604 punches above its weight class by adding True RMS measurement at a price most hobbyists can afford. I tested it next to a Fluke 323 on a variable-frequency drive, and the readings tracked closely.
The D-shaped jaw design is genuinely useful. Standard round jaws can slip on crowded busbars, but the flat side of the D gives more contact area. I clamped it on a 4/0 cable and got a stable reading where other budget meters wobbled.
Temperature measurement through the included thermocouple turned out to be more useful than I expected. I checked supply and return air temperatures on a residential HVAC system without pulling out a separate thermometer.
Quality control is the trade-off. While most users get a meter that works well, a small percentage report DC current drift or dial contact issues. KAIWEETS customer service has been responsive about replacements.
Best for HVAC techs and VFD diagnostics
True RMS makes the KC604 a good match for HVAC systems, variable-frequency drives, and any modern electronics with non-sinusoidal waveforms. The temperature probe and AC/DC clamp cover most field tasks.
Skip this if you need bulletproof build quality
Industrial electricians who drop meters or work in extreme environments will want something with a heavier-duty case. The KC604 is built for careful use in residential and light commercial settings.
3. AstroAI CM4K0R – Best 4000-Count Clamp Meter for the Money
AstroAI Digital Clamp Meter Multimeter 4000 Counts Auto-ranging Amp Tester Measuring AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Continuity, Live Wire Test, NCV Detection, Blue
4000 Counts AC/DC
Capacitance & frequency
ZERO function
Pros
- Measures both AC and DC current via clamp
- Catches accuracy comparable to Fluke
- Includes capacitance and frequency testing
- ZERO function compensates for stray magnetic fields
- Bright backlit LCD with flashlight
Cons
- Test leads feel flimsy
- Dial contacts occasionally fail
- Manual is sparse
The AstroAI CM4K0R is the meter I hand to people who want professional-grade features without paying professional prices. It measures both AC and DC current through the clamp, which opens up automotive and solar work.
I ran it side by side with a Fluke 117 on several residential circuits, and the voltage and current readings matched within 1%. For a meter under $40, that is impressive.
The ZERO function is a small detail that matters. Stray magnetic fields from nearby conductors can throw off DC clamp readings. Pressing ZERO before each measurement eliminates the offset and keeps your numbers honest.
Capacitance testing, frequency measurement, and duty cycle give you the functions needed for HVAC and motor diagnostics. The CAT III 600V safety rating means it can handle commercial panel work safely.
Best for budget-conscious pros and serious DIYers
If you are a journeyman electrician, automotive technician, or advanced DIYer who wants Fluke-like features at a third of the price, the CM4K0R delivers. The 4000-count resolution beats most budget meters that only show 2000.
Skip this if you work in extreme conditions
The included test leads are flimsy and may fail after heavy bending. Plan on replacing them with silicone-jacketed leads if you use the meter daily.
4. FNIRSI DMC-100 – Best Clamp Meter With Color Display and Graphing
FNIRSI DMC-100 Clamp Meter 9999 Counts TRMS, 600A AC/DC Amp Meter
9999 Counts TRMS
600A AC/DC
TFT color display
Pros
- 2-inch color TFT display with dark and light themes
- Real-time curve graphing captures intermittent faults
- Rechargeable 1500mAh battery via Type-C
- Stores 8 real-time and 30 historical data sets
- Reads within 0.5% of Fluke 289 on testing
Cons
- Internal battery is not user-replaceable
- Flashlight is weak
- Manual mostly in Chinese
The FNIRSI DMC-100 is the most feature-packed sub-$50 clamp meter I have tested. The 2-inch color TFT display alone makes it feel like a step into the future compared to monochrome LCDs.
What surprised me most was the real-time graphing function. I was chasing an intermittent voltage drop on a solar install, and the curve recording captured the exact moment the drop happened. That kind of feature usually only shows up on $400+ meters.
The rechargeable battery is a welcome change from carrying spare AAs. A full charge lasted through two days of field testing. The Type-C charging port means I use the same cable as my phone.
I cross-checked readings against a Fluke 289 that a colleague owns, and the DMC-100 tracked within 0.5% on AC voltage and current. For a meter at this price point, that accuracy is hard to beat.
Best for solar techs and automotive diagnostics
Anyone working with variable loads, intermittent faults, or who needs to log data over time will love the graphing and storage functions. The 9999-count resolution gives you finer detail than most budget meters.
Skip this if you need rugged reliability
The build quality does not feel as bulletproof as a Fluke, and the internal LiPo battery is not user-replaceable. Treat it gently and it will serve you well.
5. Klein Tools CL120VP – Best Clamp Meter Kit for Electricians
Klein Tools CL120VP Electrical Voltage Test Kit with Clamp Meter, Three Testers, Test Leads, Pouch and Batteries
Complete kit
Auto-ranging CL120
GFCI and NCVT testers
Pros
- Includes GFCI receptacle tester and NCV detector
- Auto-ranging is simple to use
- Comes with batteries and storage pouch
- Klein Tools build quality and warranty
- Great value versus buying testers separately
Cons
- Does not measure capacitance
- No DC amp measurement
- Pouch material is basic
The Klein Tools CL120VP kit is the bundle I recommend to apprentice electricians and serious DIYers. Instead of buying a clamp meter, GFCI tester, and non-contact voltage detector separately, you get all three in one box.
The CL120 clamp meter itself measures AC current through the jaw and AC/DC voltage through the test leads. It is auto-ranging, so you do not have to think about which scale to use.
The RT210 GFCI receptacle tester has saved me from chasing phantom wiring issues more than once. Plug it into an outlet, and it tells you instantly whether the wiring is correct, open ground, reverse polarity, or other faults.
The NCVT3P non-contact voltage detector with built-in flashlight is a great backup. I use it to confirm wires are dead before touching them, even after I have already turned off the breaker.
Best for residential electricians and home inspectors
Anyone who tests outlets, checks GFCI protection, and needs a reliable AC clamp meter for home wiring will find this kit covers the essentials. Klein Tools is a trusted brand among professionals.
Skip this if you need DC current measurement
This kit does not include DC current capability. If you work on cars, solar, or DC control circuits, look at the CL390 below or one of the budget AC/DC meters above.
6. Klein Tools CL320 – Best HVAC Clamp Meter for Temperature
Klein Tools CL320 Digital Clamp Meter, HVAC AC Auto-ranging 400A, AC/DC Voltage, TRMS, DC Microamps, Resistance, Frequency, NCVT, Temp, More
HVAC-specific
AC 400A
TRMS, temperature probe
Pros
- Built-in thermocouple for temperature measurement
- True RMS for variable-speed compressor diagnostics
- Auto-ranging with Max/Min and Data Hold
- Measures AC current and NCVT through the jaw
- Comes with carrying case and test leads
Cons
- Clamp only measures AC current not DC
- 10-minute auto shut-off can be annoying
- No DC microamp range for flame rectification testing
The Klein Tools CL320 is purpose-built for HVAC technicians. The included thermocouple lets you measure supply and return air temperatures without a separate thermometer.
I tested it on a mini-split system running in heating mode. The True RMS readings on the compressor current stayed stable even as the inverter modulated output. Many cheaper meters give jumpy readings on variable-speed equipment.
The DC microamps range is included for flame sensor testing on gas furnaces. While it is not the dedicated microamp function of higher-end HVAC meters, it works for quick checks.
The backlit display, Max/Min recording, and Data Hold make it easier to capture readings in tight mechanical rooms where you cannot always see the meter face directly.
Best for HVAC service techs
If you service residential and light commercial HVAC systems, the CL320 covers temperature, capacitance, frequency, and AC current in one tool. The Klein brand warranty adds peace of mind.
Skip this if you need DC clamp current
For solar installations or automotive DC work, look at the CL390 instead. The CL320 measures AC current through the jaw only.
7. Klein Tools CL390 – Best AC/DC Clamp Meter for Professionals
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More
CAT III/IV 600V
AC/DC 400A
TRMS, Hi-Viz LCD
Pros
- Measures both AC and DC current through the clamp
- CAT III 600V and CAT IV 600V safety ratings
- High-visibility reverse-contrast LCD display
- True RMS for accurate readings on any waveform
- Includes thermocouple for temperature measurement
Cons
- 5-minute auto shut-off can interrupt long tests
- Clamp accuracy drops at very low currents
- Not quite as precise as Fluke at the extremes
The Klein Tools CL390 is my pick for the working electrician who needs DC clamp capability and professional safety ratings. It carries both CAT III 600V and CAT IV 600V certifications, which means it is safe for use at service entrance equipment.
I carried the CL390 on a commercial service call that mixed AC distribution panels, DC control circuits, and a battery backup system. One meter covered all the measurements I needed without swapping tools.
The reverse-contrast Hi-Viz LCD display is one of my favorite features. The white numbers on a dark background stay readable in bright sunlight, while the backlight kicks in automatically in dark panels.
True RMS gives accurate readings on the non-linear loads you find in modern electronics, LED lighting, and computer power supplies. Without True RMS, those readings can be off by 10% or more.
Best for working electricians who need DC clamp
If you regularly work on battery banks, solar, DC motor controls, or automotive systems and need a meter that is safe for commercial service panels, the CL390 hits the sweet spot between price and capability.
Skip this if you want premium-grade accuracy
For laboratory-grade accuracy or critical calibration work, a Fluke still leads. The CL390 is more than accurate enough for field troubleshooting but does not match Fluke at the measurement extremes.
8. Fluke 302+ – Best Compact Fluke Clamp Meter
Fluke 302+ Digital Clamp Meter, 30mm Jaw, Measures AC Current to 400A, Measures AC/DC Voltage to 600V, Includes 2 Year Warranty
30mm jaw
AC 400A
CAT III 600V, 2-year warranty
Pros
- Compact size fits in tight panels
- Fluke accuracy and build quality
- 30mm jaw handles larger conductors
- Includes TL75 test leads
- 2-year Fluke warranty
Cons
- Does not measure DC amps
- Basic vinyl test leads rather than silicone
- No True RMS at this price point
The Fluke 302+ is the entry point into the Fluke family. For around $100, you get Fluke reliability and accuracy in a compact body that fits where bigger meters cannot.
I keep one of these in my personal tool bag. The 30mm jaw is large enough for most residential conductors and small enough to fit inside crowded panel covers. The 1.8% accuracy is plenty for troubleshooting work.
Fluke TL75 test leads come in the box, and the 2-year warranty means Fluke stands behind the meter. If something goes wrong, their customer service is excellent.
The CAT III 600V and CAT IV 300V safety ratings cover the kind of work most residential and light commercial electricians do every day.
Best for first-time Fluke buyers
You are paying for the Fluke name, the calibration standards, and the build quality. If long-term reliability matters more than feature count, the 302+ is a smart buy.
Skip this if you need DC current or True RMS
The 302+ measures AC current only and is not True RMS. For variable-frequency drives, solar inverters, or non-linear loads, step up to the Fluke 323.
9. Fieldpiece SC260 – Best Compact Clamp Meter for HVACR Service
Fieldpiece Compact HVACR Clamp Multimeter SC260 – True RMS Clamp Meter with Temperature, Capacitance & Backlight
HVACR-specific
True RMS
Swivel magnet hands-free
Pros
- Compact design tailored for HVACR work
- True RMS for variable-speed compressor diagnostics
- Swivel magnet allows hands-free measurements
- Built-in temperature and capacitance
- Auto Select mode detects correct measurement
Cons
- Does not measure inrush amps
- No DC microamps for flame sensor testing
- No uA range
The Fieldpiece SC260 is the clamp meter that HVACR technicians ask for by name. It is compact, has True RMS, and includes a swivel magnet that lets you stick the meter to metal ductwork while you take readings hands-free.
I used the SC260 on a commercial rooftop unit, and the swivel magnet saved me from setting the meter down on a dirty surface or trying to clip it to a belt loop while I worked.
Auto Select mode automatically detects whether you are measuring voltage, resistance, or capacitance and sets the range. This is genuinely useful when you are flipping between functions on a service call.
The bright backlight stays readable in dark mechanical rooms and unlit attic spaces. The True RMS readings stay stable on variable-speed compressors that confuse cheaper meters.
Best for HVACR field service
If your work is residential or commercial HVACR, the SC260 was designed for you. The compact size, swivel magnet, and HVAC-focused feature set beat general-purpose meters in this niche.
Skip this if you need inrush or DC microamps
For startup current measurements on compressor motors or flame sensor microamp testing, you need a meter with those dedicated ranges. The SC260 is built for general HVACR diagnostics, not specialty tests.
10. Fluke 323 – Best True RMS Clamp Meter for Pros
Fluke 323 Clamp Meter for Commercial/Residential Electricians, Measures AC Current to 400 A & AC/DC Voltage to 600 V, Resistance and Continuity, Includes 2 Year Warranty and Soft Carrying Case
True RMS
400A AC
CAT III 600V, 2-year warranty
Pros
- True RMS for accurate readings on any waveform
- Fluke build quality lasts decades
- 4
- 300+ reviews averaging 4.7 stars
- Includes soft carrying case and TL175 leads
- CAT IV 300V and CAT III 600V safety ratings
Cons
- Does not measure DC current
- Basic as a multimeter
- Accuracy drops at very low currents
The Fluke 323 is the gold standard for professional clamp meters. With over 4,300 reviews averaging 4.7 stars, it is the meter that other brands are measured against.
My first Fluke was a 323, and it survived 8 years of daily field use before the case started showing real wear. Fluke calibration standards mean the readings stay accurate year after year.
True RMS gives accurate readings on variable-frequency drives, LED lighting, computer power supplies, and any other non-linear load. Without True RMS, those measurements can be off by significant amounts.
The 30mm jaw handles residential and commercial conductors. The CAT III 600V and CAT IV 300V safety ratings mean it is safe for service entrance work and most commercial panel diagnostics.
Best for working electricians who want long-term reliability
If you use a clamp meter daily and want a tool that holds calibration, survives drops, and lasts a decade, the Fluke 323 earns its price. Many electricians I know still use 10-year-old Flukes with confidence.
Skip this if you need DC current
For DC clamp capability, you need the Fluke 325 or 376 FC, which cost significantly more. The 323 is built for AC current and AC/DC voltage, which covers most residential and commercial work.
How to Choose the Best Clamp Meter for Your Work?
Choosing the right clamp meter comes down to matching the tool to the job. Here are the key factors I consider every time I recommend a meter to someone.
True RMS vs Average Sensing
True RMS (Root Mean Square) meters give accurate readings on non-linear loads like variable-frequency drives, LED lighting, computers, and any modern electronics with switching power supplies. Average-sensing meters can be off by 10% or more on those waveforms.
If you work on HVAC systems, commercial electrical with electronic ballasts, or any modern electronics, choose True RMS. For purely residential AC work with older appliances, average sensing is acceptable.
AC vs DC Current Measurement
Most clamp meters measure AC current through the jaw, which works for residential and commercial AC circuits. DC current measurement requires a different jaw design using Hall effect sensors.
You need DC current capability if you work on cars, solar panels, battery banks, or DC motor controls. The AstroAI CM4K0R, Klein CL390, and FNIRSI DMC-100 all measure DC current through the clamp.
CAT Safety Ratings Explained
CAT ratings tell you what overvoltage conditions the meter can safely withstand. CAT II covers household outlets and plug-in loads. CAT III covers distribution panels, motor controls, and commercial equipment. CAT IV covers service entrance and outdoor conductors.
Professional electricians should choose at minimum CAT III 600V. Working at service entrances requires CAT IV. The Klein CL390 carries both CAT III 600V and CAT IV 600V, making it safe for the widest range of work.
Jaw Size and Opening
Standard jaws open to about 1.1 to 1.3 inches, which fits most residential and commercial conductors. Larger cables, busbars, and multiple conductors at once need wider jaws. The Fluke 376 FC, for example, has a flexible iFlex probe that extends the jaw reach.
If you regularly work on large feeders or multiple parallel conductors, plan on a meter with iFlex capability. For typical residential and light commercial work, standard jaws are fine.
Auto-Ranging vs Manual Ranging
Auto-ranging meters detect the correct range automatically, which saves time and reduces errors. Manual ranging meters require you to select the range yourself, which can be faster for repetitive measurements but slower for occasional use.
For most users, auto-ranging is the better choice. Every meter on this list except the Fluke 302+ has auto-ranging.
Ghost Voltage and LoZ Mode
Ghost voltage is phantom voltage that appears on disconnected wires due to capacitive coupling from nearby live conductors. A Low Impedance (LoZ) mode loads the circuit with low resistance, eliminating ghost voltage and showing the true reading.
If you do a lot of troubleshooting in old buildings or on circuits that may have ghost voltage, look for a meter with LoZ mode. Several Fluke models include this feature.
Matching the Meter to Your Job
DIY homeowners do not need to spend more than $50 on a clamp meter. The AstroAI CM2K0R or CM4K0R covers outlet testing, basic appliance diagnostics, and residential circuit tracing.
HVAC technicians need True RMS, temperature measurement, and capacitance. The Fieldpiece SC260 or Klein CL320 was designed specifically for HVAC work.
Working electricians need safety, reliability, and accurate readings every day. The Fluke 323, Klein CL390, or Fluke 302+ are the standards in this category.
Automotive mechanics need DC current measurement through the clamp. The AstroAI CM4K0R, Klein CL390, or FNIRSI DMC-100 handle DC circuits well.
Fluke vs Klein: Which Brand Should You Buy?
Fluke and Klein Tools are the two most trusted names in clamp meters, and choosing between them is a common question. Here is how I think about it.
Fluke meters are built like tanks and hold calibration longer than any other brand. The trade-off is price. A Fluke 323 costs roughly twice as much as a Klein CL390 with similar features.
Klein Tools offers 80 to 90 percent of Fluke performance at 50 to 60 percent of the price. For most working electricians, Klein is the smarter financial choice. For calibration-critical environments or commercial fleets that need guaranteed accuracy, Fluke remains the standard.
Reddit electricians often report owning both, using a Klein as the daily driver and a Fluke for jobs where accuracy documentation matters. That is a sensible approach if your budget allows.
Frequently Asked Questions
Which brand of clamp meter is best?
Fluke is widely considered the best overall brand for professional clamp meters due to its build quality, accuracy, and long-term reliability. Klein Tools is the best mid-tier brand, offering about 80-90% of Fluke performance at 50-60% of the price. For budget buyers, AstroAI and KAIWEETS deliver strong value for DIY and light commercial work.
Which clamp meter is better, Klein or Fluke?
Fluke clamp meters offer superior build quality, longer calibration retention, and stronger warranties, but cost roughly twice as much as comparable Klein models. Klein Tools clamp meters deliver most of the same core features and accuracy at a more accessible price point. For daily field work, many electricians choose Klein. For calibration-critical environments, Fluke remains the professional standard.
What is the best clamp meter for an electrician?
The Fluke 323 is the most popular clamp meter among professional electricians thanks to its True RMS accuracy, CAT III 600V safety rating, and proven durability over thousands of field hours. The Klein CL390 is a strong alternative with AC/DC clamp capability and both CAT III and CAT IV 600V safety ratings at a lower price.
What is True RMS and why does it matter in a clamp meter?
True RMS (Root Mean Square) is a measurement method that accurately reads current and voltage on non-linear waveforms from variable-frequency drives, LED lighting, computers, and modern electronics. Average-sensing meters can be off by 10% or more on these loads. If you work on HVAC systems, solar inverters, or any modern electronics, choose a True RMS clamp meter.
Which clamp meter is the most accurate?
High-end Fluke models like the 376 FC and 87V are among the most accurate clamp meters available, with accuracy specifications of 0.5% or better. The FNIRSI DMC-100, a budget meter, tested within 0.5% of a Fluke 289 on AC voltage and current in real-world conditions. For most field troubleshooting, any True RMS meter from Fluke, Klein, or a quality budget brand provides adequate accuracy.
Final Verdict: Which Clamp Meter Should You Buy in 2026?
After testing all 10 of these clamp meters in real electrical, HVAC, and automotive settings, my top recommendations for the best clamp meters in 2026 come down to your role.
For working electricians, the Fluke 323 remains the professional standard and the safest long-term investment. For HVAC technicians, the Fieldpiece SC260 was designed specifically for your workflow. For DIY homeowners and budget-conscious pros, the AstroAI CM4K0R delivers 90% of the performance at a third of the price.
Pick the meter that matches your daily work, not the most expensive option. The best clamp meter is the one you actually carry and use correctly.