Portable and convenient to carry on keychain
Easy to use with quick response time

Press and hold the power button.
Green, Yellow & Red LED�s will light
In about 10 seconds, the Yellow and Red LED�s will go out and the Green will remain on to indicate READY status.
Just exhale into the vent to get your BAC immediately.

Coloured Lights Indicate
Green: under 0.02% BAC
Yellow: over 0.02% BAC
Red: over 0.05% BAC

Includes:
Countdown and count-up timer keep track of parking time.
LED flashlight torch function.
English Instruction Manual

Requires: 2 x AAA 1.5V batteries (not included)
Dimension: 75mm x 44mm x 25mm( approx)