Feature 1 Non Contact: Designed with gas receiving hole, non contact blowing detection, safer, blowing time of 4 seconds is very fast. 2 High Accuracy: Built in imported high accuracy sensor chip, 0.005% BAC detection accuracy, detection range is 0.00-0.19% BAC 0-0.95mg/L. 3 Alarm Mode: <0.01% BAC, the green light is on, 0.02% BAC0.05% BAC, the yellow light is on; 0.08% BAC, the red light is on, indicating safety, warning and danger respectively. When the yellow light and red light are on, an alarm will be issued at the same time 4 Portable Small: Light weight and small size, simple and reliable, can be carried at any time, easily into a pocket or bag. 5 Wide Applications: Can be used by roadside law enforcement officers, professional therapists. It can also be used to test yourself, friends and family.Item Type: Breath Alcohol TesterMaterial: ABSModel: for H10Color: BlackBattery Type: Requires 2 AAA Batteries (not Included)Detection Range: 0.00-0.19% BAC 0-0.95mg/L Package List1 x Breath Alcohol Tester1 x User Manual