Features 1、STABLE SENSOR: The portable breath tester uses the core stable sensor, which has high measurement accuracy, good stability and less interference. 2、WIDE RANGE: The detection range is 0.000‑0.400% BAC, 20 driving while intoxicated 80 drunken driving, the measurement result is clear at a glance. 3、MULTIPLE PROMPTS: The breath tester has sound and photoelectric prompts, red light prompt for exceeding the standard, fast investigation, stable and reliable. 4、EASY OPERATION: Press the power button, wait for 10s to warm up, wait for 10s after blowing, and check the test results according to the color of the light. 5、POWER SUPPLY: The portable breathalyzer comes with 18650 3.7V 800mAh lithium battery, and is equipped with USB cable for convenient power supply. Specification Item Type: Breathalyzer Material: ABS Battery: 18650 lithium battery 3.7V 800mAh (with built in battery) Application: Drunk Detection Detection Range: 0.000-0.400%BAC Package List 1 x Tester 1 x USB Cable 5 x Air Blowing Pipe 1 x User Manual