High Accuracy. This breath alcohol tester is used to measure the concentration of alcohol in the human body. With sensitive semiconductor sensor, it can quickly give a result to judge whether you can drive or not (only 5 seconds). Provide you with high accuracy test result (up to 0.01 mg/l), four measurement units can be converted (% BAC, BAC , mg/l, mg/100 ml).Good MCU control. When the test result is higher than 0.05% BAC or 0.50 BAC or 0.25 mg/L or 50 mg/100 ml, it will send audio and video warning to alarm you.Energy saving, automatic shutdown. Powered by 3AAA batteries (not included but commonly available), it will automatically shut off to save power after completing the test for 5 seconds. Each time you install batteries, you can test more than 200 times. In addition, it is designed with low power indication.Blue digital LCD display. The backlight is convenient for you to use at night. Equipped with 5 tips, it will be much easier for you to test your family or friends.Compact design. This breathalyzer is portable, space-saving, lightweight, easy to hold and carry. The fabric bag provides great convenience, you can put your breathalyzer in this bag when not in use. Pocket size allows you to take it anywhere and anytime, ensuring your safe driving after drinking.Descriptions:This breath alcohol tester with five mouthpieces is used to measure blood alcohol content (BAC), providing you with an accurate and reliable result to judge whether you are fit to drive.High precision sensorAdopted Nano material, the semiconductor sensor can give you reliable and accurate result.Thoughtful Design: 5 MouthpiecesIn order to prevent infection by oral bacteria, we offer you 5 mouthpieces. So your family members and friends can use it, as well.Easy to useNo wires, no complicated accessories, only need 3 AAA batteries, it is extremely easy to use. Just blow towards it, you can quickly get the result.Detection rangeThe breath alcohol tester offers you a professional testing range of 0.00 to 0.19% BAC and 0.00 to 1.99 BAC and 0.00 to 0.99 mg/l & 0.00-199mg/100ml.Lightweight Palm-sized, lightweight, you can take this breathalyzer wherever you go. Test your blood alcohol level at will.Features:Product Dimensions (L * W * H): 4.059in * 2.355in * 1.102inWeight: 2.2 ouncesDetection range: 0.00 to 0.19% BAC; 0.00 to 1.99 BAC; 0.00-0.99 mg/l; 0.00-199mg/100 mlAlarm level: 0.05% BAC; 0.50 BAC; 0.25 mg/L; 50mg/100mlAlarm Type: Audio AlarmAccuracy: 0.01% BAC; 0.10 BAC; 0.05 mg/l; 10 mg/100 mlResponse time: less than 5sPowered by: 3 AAA batteries (not included)Relative humidity: less than 95% (no dew)Certification: RoHS, CEPackage Included:1x Breathalyzer5x Beaks1x User Manual