Best keychain breathalyzer – Top 8 of 2021

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We checked out hundreds reviews, and put together a list of the best sellers. Check out the top keychain breathalyzer below.


No. 1
BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional Wireless Smartphone Connectivity to Apple...
303 Reviews
BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional Wireless Smartphone Connectivity to Apple...
  • ESTIMATE YOUR ALCOHOL LEVEL WITH PRO-GRADE ACCURACY - Powered by BACtrack's patented BluFire Fuel Cell Sensor, the C6 utilizes the same...
  • KNOW WHEN YOUR BAC WILL RETURN TO 0.00% - BACtrack's innovative ZeroLine technology estimates the time until your BAC is 0.00%, allowing you...
  • CALL AN UBER - Remember, the only safe time to drive is when your BACtrack shows 0.00%. Anything above that? You can call an Uber directly...
  • OPTIONAL WIRELESS CONNECTIVITY - Use the BACtrack C6 with or without your smartphone. "Standalone Mode" delivers your BAC results directly...
  • ONE YEAR WARRANTY - If your BACtrack C6 ceases to function properly during the first year of operation, we will repair or replace the...
No. 2
BACtrack Keychain Breathalyzer (Black) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
1,087 Reviews
BACtrack Keychain Breathalyzer (Black) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
  • QUICKLY & EASILY ESTIMATE YOUR BAC - Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you can trust
  • EASY TO USE - One button operation means you simply power on your keychain breathalyzer and begin testing in seconds. It's that easy!
  • TAKE IT WITH YOU ANYWHERE - The ultra-compact BACtrack breathalyzer keychain easily fits in a pocket or purse, making it a great portable...
  • OPTIMAL BREATH CAPTURE - The innovative fold-out mouthpiece ensures only your breath goes into the alcohol tester, while other airborne...
  • ONE YEAR WARRANTY - If your BACtrack Keychain ceases to function properly during the first year of operation, we will repair or replace the...
SaleNo. 3
BACtrack Go Keychain Breathalyzer (White) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
424 Reviews
BACtrack Go Keychain Breathalyzer (White) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
  • QUICKLY & EASILY ESTIMATE YOUR BAC - Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you can...
  • EASY TO USE - One button operation means you simply power on your Go keychain breathalyzer and begin testing in seconds. It's that easy!
  • TAKE IT WITH YOU ANYWHERE - The ultra-compact BACtrack Go breathalyzer keychain easily fits in a pocket or purse, making it a great portable...
  • OPTIMAL BREATH CAPTURE - The innovative fold-out mouthpiece ensures only your breath goes into the alcohol tester, while other airborne...
  • ONE YEAR WARRANTY - If your BACtrack Go ceases to function properly during the first year of operation, we will repair or replace the...
No. 4
GREENWON Breathalyzer Keychain Digital Alcohol Tester Detector Breath Analyzer Audible Alert Portable with LCD Display...
  • -★- HIGH ACCURACY & SENSITIVE . This breath alcohol tester is used to measure concentration of the alcohol in human body. With sensitive...
  • -★- ENERGY-SAVING & AUTO-OFF FUNCTION. Powered by 2 x AAA batteries( not included, but commonly available), this breathalyzer will...
  • -★- FASHION KEYCHAIN DESIGN. This alcohol breathalyzer is space-saving, lightweight. It is easy to hold and carry. Pocket-size allows you...
  • -★- LARGE DIGITAL LCD SCREEN This alcohol breathalyzer has a large LCD screen with orange background Light. It is convenient for you to...
  • -★- 30 DAYS MONEY BACK GUARENTEE,LIFETIME WERRANTY.
No. 5
BACtrack Keychain Breathalyzer (Black) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
14 Reviews
BACtrack Keychain Breathalyzer (Black) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use
  • QUICKLY & EASILY ESTIMATE YOUR BAC - Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you can trust
  • EASY TO USE - One button operation means you simply power on your keychain breathalyzer and begin testing in seconds. It's that easy!
  • TAKE IT WITH YOU ANYWHERE - The ultra-compact BACtrack breathalyzer keychain easily fits in a pocket or purse, making it a great portable...
  • OPTIMAL BREATH CAPTURE - The innovative fold-out mouthpiece ensures only your breath goes into the alcohol tester, while other airborne...
  • ONE YEAR WARRANTY - BACtrack stands behind every product we manufacture and sell, but if during the first year of operation any unit ceases...
No. 6
BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional Wireless Connectivity to Apple iPhone, Google...
  • ESTIMATE YOUR ALCOHOL LEVEL WITH PRO-GRADE ACCURACY - Powered by BACtrack's patented BluFire Fuel Cell Sensor, the C6 utilizes the same...
  • KNOW WHEN YOUR BAC WILL RETURN TO 0.00% - BACtrack's innovative ZeroLine technology estimates the time until your BAC is 0.00%, allowing you...
  • CALL AN UBER - Remember, the only safe time to drive is when your BACtrack shows 0.00%. Anything above that? You can call an Uber directly...
  • OPTIONAL WIRELESS CONNECTIVITY - Use the BACtrack C6 with or without your smartphone. "Standalone Mode" delivers your BAC results directly...
  • ONE YEAR WARRANTY - If your BACtrack C6 ceases to function properly during the first year of operation, we will repair or replace the...
No. 7
Keychain Breathalyzer (White)- Digital LCD Display - Portable Pocket Key Ring Alcohol Tester for Personal Use (1)
  • Put safety first. Our portable breathalyzer testers are a great tool to help estimate breath alcohol levels for employer drug tests and...
  • Featuring an LCD display, our portable breathalyzers are highly accurate with a digital display. It's incredibly easy to use!
  • Auto power off and low battery indication offer added peace of mind.
  • Available as a multi-pack for households with multiple cars.
  • ses 2 "AAA" alkaline batteries (not included).
No. 8
LOVUMMOR Keychain Breathalyzer, Ultra-Portable Pocket Keyring Digital Breath Alcohol Tester Detector Analyzer with...
  • 🍺【HIGH ACCURACY & SENSITIVE BREATHALIZER FOR ALCOHOL】This breath alcohol tester is used to measure BAC (Blood Alcohol Concentration)....
  • 🍺【LARGE DIGITAL LCD SCREEN】This alcohol breathalyzer has a large LCD screen with background Light. The back-light is convenient for...
  • 🍺【ENERGY-SAVING & AUTO-OFF】Powered by 2 AAA batteries (not included), this keychain breathalyzer will automatically shut off to save...
  • 🍺【PORTABLE BREATHALYZER TO TEST ALCOHOL】This breathalyzer alcohol tester is space-saving, lightweight, portable, it is easy to hold...
  • 🍺 【WHAT YOU GET】1 x personal breathalyzer with keychain (2 AAA batteries not included) + 10 x mouthpieces +1 x user manual + Our...