Best Keychain Breathalyzers

AlcoSense Lite 2 Breathalyser/Alcohol Tester for UK, Ireland and Scotland/CE Approved Alcohol Detector & Home Breathalyzer

AlcoSense Excel Breathalyser | Police Derived Fuel Cell Alcohol Sensor | Auto Express “Best Buy” & Evo Magazine Breathalyzer Test Winner | CE Approved Alcohol Tester | Precision Designed in the UK

VEIPAO Alcohol Breathalyzer Tester UK Breathalysers: Portable Breathalyser with 11 Mouthpieces - Digital LCD Screen Alcohol Test Kit High Accuracy for Home Personal Professional Use

BACtrack S80 Breathalyser | Professional-Grade Accuracy | DOT & NHTSA Approved | FDA 510(k) Cleared | Portable Breath Alcohol Tester for Personal & Professional Use

BACtrack Trace Breathalyser | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use

Twin Pack of Breathalyzer Test Kits for UK & EU Certified Test Kits - readouts for 0.0, 0.2, 0.5 and 0.8

BACtrack C8 Breathalyser, Professional-Grade Accuracy, Optional Wireless Smartphone Connectivity, Compatible w/Apple iPhone, Google & Samsung Android Devices, Apple HealthKit Integration

BACtrack Element Breathalyser | Professional-Grade Accuracy | DOT & NHTSA Compliant | Portable Breath Alcohol Tester for Personal & Professional Use

BACtrack Scout Breathalyser, Professional-Grade Accuracy, DOT & NHTSA Compliant, Portable Breath Alcohol Tester for Personal & Professional Use

BACtrack Professional Breathalyser Mouthpieces (100 Count), Compatible with BACtrack S80, Trace, Scout, Element & S75 Breath Alcohol Testers