Specification:

Sensor: Semiconductor alcohol sensor
Warm-up time: ≤ 10 seconds
Respond time: ≤ 5 seconds
Operating temperature range: 5 ~ 40^oC
Detection range: 0.00 ~ 0.19% BAC
Power input: Tester: 3V (2 x AAA alkaline battery, not included)
                   Clock: 1.5V (1 x AG13 Cell Button, included)

Unit size: 91 x 31 x 17.5 mm
Print size: 20 x 30 mm

Testing Result:

Green              ≤ 0.01% BAC
Yellow       0.02 ~ 0.04% BAC
Red                 ≥ 0.05% BAC

Additional:

1 Clock

2 Alarm clock

3 Countdown timer