It is easy to read this alcohol breath tester with its LED backlight display. This alcohol breath tester adopts high-sensitivity chip, which can give you high-precision, stable and efficient measurement. Made from ABS, this alcohol breath tester is eco-friendly and durable to use. The spare 5 blowing nozzles can be used by multiple people and can be replaced regularly. The length of this alcohol breath tester is 11.8cm, the width is 7cm, the height is 2.8cm. This alcohol breath tester is used to measure your breath concentration after drinking, which is very convenient to use. Item Name: Alcohol Breath Tester Material: ABS Test Range: 0.00-0.19%BAC (0.0-1.9g/1) Accuracy: -0.01+0.02%BAC (at 0.05%BAC Alarm Point) Input Voltage: 2 AA Alkaline Batteries (Not Included) Warm-up Time: 10 Seconds Blowing Time: within 10 seconds (Generally 3-5 Seconds is Appropriate) Response Time: