New mini-Breathalyzer right on your keychain. Never again have a doubt about how much you have had to drink or whether you are legally OK to drive. This mini breathalyzer has a traffic light readout system making it super easy use. Simply blow for 5 seconds then wait. Indicating green and you are good to go; yellow and you may want to wait a while before you go home. If it indicates red then you should hand your keys to friend.
This is great reference tool for seeing if you have had just a little too much to drink, but be careful to not rely on this as an iron clad test!

Manufacturer Specification

Analyzing Method: Breath Test

Sensor: Advanced semiconductor oxide alcohol sensor

Screen: LCD Display for Time/ Timer

Alcohol Reading: 3 LED Light - Green, Yellow, Red

Range: 0.00~0.19 BAC & 0.0~1.9g/l

Alert Mode: 

    Safe: Green LED Light - 0.0% ~ .02% BAC (Blood Alcohol Concentration)

    Caution: Yellow LED Light - .02% ~ .05% BAC 

    Danger: Yellow and Red LED Light – equal or over .05%BAC

Power Source: 2x AAA Batteries    

Dimension: 80x38x20mm (LxWxD)

Manufacturer Ref.: ECLN28YUYW7N

Other Features:

Countdown Timer

Real Time 24 Hour Clock

Stopwatch

Flashlight - Orange LED Light

Test Accuracy: .01 BAC (.1g/l)

Accessories:

Manual