Feature: 1. A Drunk Tester: With high accuracy semi conductor, the breath tester can test the concentration of ethanol in your body to see if you can drive. 2. The Test Range: The testing range is 0.00‑0.19% BAC and 0.0‑1.9G/L, and the alarm threshold is 0.05% BAC, which ensures high work reliability. 3. Easy Operation: Supports one button trigger and shutdown, the sensitive breath drunk meter has quick response to simplify the repeated testing. 4. Better Display: Designed to have clear LED display, the digital drunk meter is very easy to operate, largely improving your efficiency as well. 5. Simple to Carry: Comes with a compact size and a light weight as well, the LED breath tester is very simple to carry for indoor and outdoor use. Specification: Item Type: Breath Tester Display Units: % BAC, g/L. Battery: 2 x AAA alkaline battery, shipped without battery. Sensor: High sensitivity semiconductor ethanol sensor. Test Range: 0.00-0.19% BAC, that is, 0.1-1.9g/L. Ethanol Content: -0.01 to +0.02% BAC, has 0.05% BAC alarm point. Preheating Time: 10 Seconds Blowing Time: Within 10 Seconds Response Time: <5 Seconds Automatic Shutdown: 10 seconds after displaying the results. Product Size: Approx. 108 x 50 x 30mm / 4.25 x 1.97 x 1.18in Working Environment: 0-45℃. Package List: 1 x Breath Tester5 x Test Nozzle (One on the Tester)1 x User Manual