1. Sensor: Semiconductor alcohol sensor 2. Warm-up time: Within 10 seconds 3. Respond time: Within 5 seconds 4. Operating temperature range: 5 ~ 40 oC 5. Detection range: 0.00% - 0.19% BAC / 0.00- 0.95 mg/l 6 Digital display results (% BAC / mg/l) 7. Quick response and resume 8. Auto power-off 9. Red-colored backlight 10. Low voltage indicator 11. Power input: Use 2xAAA 1.5V alkaline batteries (not included) 12. Unit size: 116x 68x 25 mm Package 1*Alcohol tester1*English user Manual5*mouthpiece1*retail package