Features: Digital display function: This alcohols tester has fast detection speed, making it more convenient to use. High Accuracy: Alcohols detector is a high sensitivity alcohols measuring instrument with high accuracy. Hygienic Nozzle: Accurates alcohols breathalyzers does not use traditional suction nozzles, it is clean and hygienic and can be used with confidences. Rechargeable: This alcohols tester is equipped with a rechargeables battery, which is charged via USB cable, has a long standby time, is lightweight and compact, easy to carry, and can be easily placed in a purse or pocket. Small Portable: The alcohols tester has a built in purification chamber and is small and portable, making it easy to use when going out. 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 measurement Description: Net weight: 16.9g Battery: 200mah lithiums battery (built-in)