High accuracy and sensitive, this breath alcohol tester is used to measure concentration of the alcohol in human bodyWith sensitive semi-conductor sensor, this portable breathalyzer can quickly give a result to judge whether you can drive or notProvide you high accuracy test result, detection range: 0.00-0.19% BAC / 0.00-0.95 mg/L.Saving power: the alcohol tester is power by Universal AAA batteries. It will auto-sleep 10 seconds after testEasy to use: The personal breathalyzer is extremely easy to use. The back light screen is clear while using the breath alcohol tester at night. There are extra mouthpieces used to test, clean and convenientThis breathalyzer alcohol tester is space-saving, lightweight, portable, it is easy to hold and carrySpecifications:Material: ABSAccuracy: -0.01~+0.02%BACBlowing Time: Within 10 secondsSize: 11 * 3 * 7cm / 4.33 * 1.18 * 2.75inPackage included:1 x Alcohol Tester5 x Mouthpieces1 x Instruction