Professional Breathalyzer Keychain by Emerywood: Alcohol Tester Red Backlit Breath Analyzer Portable High-Precision Breathalyzer with LCD Display and Replacement Mouthpieces;

Product Details
Sensor: Semiconductor alcohol sensor
Warm-up time: Within 10 seconds
Respond time: Within 5 seconds
Operating temperature range: 40 ~ 100 degrees Fahrenheit
Detection range: 0.00 - 0.19% BAC & 0.0-1.9 g/l
Digital display results and audible alert
Auto power-off
Key chain & red color backlight for portability and easy read outs
Power: 3V (2 x AAA alkaline battery, not included)
Unit size: 118 x 70 x 28 mm
Replaceable mouthpiece (5 pieces included)

Package Content
1 Instruction Manual
1 Digital Breathalyzer
5 Replaceable Mouthpieces