Feature:Lightweight and compact for easy portability. Micro-matte process, delicate touch, can not put down.Two detection modes can meet the needs of different occasions: the precise mode requires the installation of a blowpipe, and the detection is more accurate; the quick check does not require a blowpipe, which is suitable for multiple people to quickly check whether there is alcohol.Equipped with smart chips and high-sensitivity sensors, the measurement is more accurate.Accurate values, high-definition large-screen display, clear at a glance.USB rechargeable lithium battery can be charged without frequent battery replacement.Specification:Display: 2.0-inch display with dazzling green lightDetection range: 0.00-400mg/100mlDetection accuracy: 10% (mg/100ml)Warm-up time: 10 secondsInduction time: 5 secondsAlarm function: when the alcohol content exceeds the standard, the red light in the upper left corner will light up, and the buzzer will automatically alarmPower battery: 3.7V/200mAh rechargeable lithium batteryInterface: Micro-USB (5V/1A charging)Size: about 3.5x13.5x4cmColor: BlackMaterial: Metal + PlasticPackage Contents:1 x Alcohol TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.