Features: *High Quality Material: This product is made of high-quality material, which is wear-resistant and durable, not easy to break and can be used for a long time. *Easy to use: the alcohols tester is powered by 2 AAA batteries (not included), with digital display, easy to use. *Versatile: The alcohols tester is equipped with a high-precision alcohols sensor and can be widely used to test friends at bar and family member at house parties. *Portable: lightweight and compact, it can easily fit in your purse or pocket. *Wide Application: Suitable for weddings, parties, banquets or other social events, ensuring your safety while driving under influence. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurementDescription:Material: ABS Size: 118*73*28mm Power supply: 2*AAA batteries (not included)Test range: 0.00-0.19%BAC (0.0-1.9g/l)Accuracy: -0.01~+0.02%BAC (at 0.05%BAC alarm point) Warm-up time: 10 seconds Blowing time: within 10 secondsReaction-time: <5 seconds Automatic shutdown: 10 seconds after displaying results Working environment: 5~40