Specifications Product Name Alcohol Tester Test Range 0 000 0 19 BAC 0 0 1 9g l Accuracy ±0 05 BACVoltage 5VThe Reaction Time Is Less Than 5sBlowing Time 3 5 SecondsPreheating Time 10 Seconds Wait For 10 Seconds To Test After Starting Auto Shutdown 10 Seconds After The Result Is DisplayedWorking Environment 0℃ 45℃Power USB Charging InterfaceFeatures 1 USB interface charging do not need to buy additional batteries 2 The test does not need to touch the mouth safe and hygienic 3 One button operation easy to use the test can be completed in 22 seconds 4 LCD display for easy reading 5 According to the degree of alcohol exceeding the limit different beeping sounds will be emitted 6 Using highly sensitive semiconductor sensors fast speed and accurate data Package includes 1 X Alcohol Tester