1 Sensor: Semiconductor alcohol sensor 2 Warm-up time: Within 10 seconds 3 Respond time: Within 5 seconds 4 Operating temperature range: 5 ~ 40 íµ 5 Detection range: 0.00% - 0.19% BAC 0.0 - 1.9 g/l 6 Digital display results (% BAC, g/l) 7 Quick response and resume 8 Auto power-off 9 Temperature indicator (for 6389ET only) 10 Low voltage indicator 11 Real time & Alarm clock & Countdown timer 12 Power input: Tester: 3V (2 x AAA alkaline battery, not included) Clock: 1.5V (1 x AG13 Cell Button, included) 13 Unit size: 100 x 37 x 17 mm Print size: 20 x 10 mm