Feature:1. An instrument for analyzing the concentration of alcohol in the blood anytime, anywhere.2. Non contact use, no need to accompany the breathing port, more convenient to use.3. The breath alcohol tester uses nano semiconductor alcohol sensors to quickly and accurately detect the breath of alcohol.4. The test value is directly displayed on the LCD, and the reading is convenient and simple.5. Breathalyzer can alarm by sound and light, and automatically shut down: about 1 minute.Specification:Item Type: BreathalyzerMaterial: ABSInput Voltage: DC 3VHeat Up: 10 SecondsResponse: 5 SecondsRecovery: 10 SecondsTest Range: 0.00 - 0.20% BAC or 0.0 - 1.9 g/LAccuracy: 0.01% Bad alarm point (0.05%BAC)Alarm Range: 0.05%BAC (0.5g/L), sound and light alarmAutomatic Shutdown: About 1 minuteAdaptable Battery Model:Battery Model: 2 x AAA batteries(shipped without batteries).Package List:1 x Breathalyzer 1 x Lanyard1 x Storage Box1 x Manual