Features: 1.Non Contact Detector: Designed with gas receiving holes, 4 seconds non?contact blowing detection. Save money and be healthy. 2.High Accuracy: Built?in imported high?precision sensor chip, detection accuracy of 0.01% BAC, detection range of 0.00?0.19% BAC (0?1.9G/L). 3.Accurate Alarm Mode: <0.01% BAC; 0.02% BAC?0.05% BAC; 0.08% BAC, corresponding to green, yellow and red lights respectively, indicating safety, warning and danger. 4.Portable Design: Small and portable, the alcohol tester can be placed on the car console and ready to use. Good for travel. 5.Personal Professional Use: From personal, parental, to banquet, bar or professional use, a quick, easy and reliable way to test their blood alcohol level. specification:Item Type: Alcohol Tester Colour: Black Material: ABS Function: Alcohol content test Built-in Battery: Polymer lithium-ion battery Battery Capacity: 200mAh Detection Range: 0.00-0.19% BAC (0-1.9G/L) Detection Error: 0.01% BAC Detection Unit: Mg/L (BrAC); mg/mL (BAC) PackageList:1 x Alcohol Tester 1 xChargingLine 1 x Manual