Digital Alcohol Breathalyser. Drive safe. Never again have a doubt about how much alcohol you have had to drink or whether you or your friend is legally ok to drive. Function: 1. Digital display results (% BAC / g/l) 2. Use mouthpiece 3. Alert level calibrated 4. Quick response and resume 5. Auto power off Specifications: 1. Sensor: Advanced semiconductor oxide alcohol sensor 2. Detect range: 0.00-0.19% BAC / 0.0-1.9 g/l 3. Warm-up time: Within 10 seconds 4. Respond time: Within 5 seconds 5. Operating temperature range: 10-40 6. Environmental temperature: 40%-90% 7. Power input: Use 2x "AAA" alkaline batteries (not included) 8. Unit size: 116x68x25 mm Features & Benefits of digital breath alcohol tester: Simple and conveniently design for analysis Blood Alcohol Concentration (BAC) at anytime and anywhere *with red backlight *5PCS of mouthpieces included in the packaging *Ensure your drive safety *Detect range: 0.00~0.19%25 BAC & 0.0~1.9g/l *Dual LCD display(BAC LCD display and timer display) *Time display with alarm function and count down timer *Alert level calibrated *Audible alarm which is great when you are under the influence or under dim light conditions. *Quick response and resume *Auto power off: 1minute approx. *Operating time: Warm up: 10s, response: <5s *Powered by 1.5V AAA X2 alkaline batteries (Not included in package) *with keychain, easy and convenient to carry Packing.