Features: 1. Advanced flat surfaced alcohol sensor, high sensitivity 2. Rapid detect results quick response and resume 3. High accuracy, detection range: 0.000-0.199% BAC / 0.00-1.99 BAC / 0.00-0.99 mg/L 4. Easy to use, Light weight, With a bag for it, easy to carry 5. Low power consumption , auto power-off, Long span life 6. Sensor fault self checking 7. Blue-colored backlight LCD display. Description: Color: Black LCD Back light: Blue Sensor: Advanced flat surfaced semiconductor alcohol sensor Warm-up time: Within 10 seconds Respond time: Within 5 seconds Operating temperature range: 5~40 Detection range: 0.000-0.199% BAC / 0.00-1.99 BAC / 0.00-0.99 mg/L Digital display results (% BAC / BAC / mg/L) Power input: 3V (3 x alkaline battery, not included) Net weight: 70