Features: 1.It is easy to operate, and just blow into the instrumen and you can get the alcohol content in the body accurately. 2.There is no contact with the instrument, so bacteria can be prevented from entering the oral cavity, which is clean and safe. 3.This is a dvanced alcohol sensor, which has high sensitivity and fast response. If the value exceeds your preset value, it will issue a warning. 4.The LCD screen functions well, so even in the night and under backlight situation, the product can bring you convenience. 5.With compact design and portable size, it is easy to carry. And it can switch among the four units: mg/100, BAC , g/l , mg/L BrAC. Specification: Item Type: Alcohol Tester_x000D_ Material: Aluminium Alloy_x000D_ Detection Range: Approx. 0.00-0.20%BAC / 0.0-1.9g/l_x000D_ Accuracy: Approx. 0.05%bac_x000D_ Warm-up: 10s_x000D_ Response: