Portable alcohol tester helps you quickly detect the alcohol concentration, with high sensing chip, the measurement is more accurate. Blowing detection, no mouthpiece needed, the measurement is healthier. Features: Portable alcohol tester, large LED display, accurate readings, with three-level indicator lights, the test results are clear at a glance. It can help you scientifically filter, purify impurities, retain alcohol, and make the test result closer to the bloods alcohol concentration. Equipped with intelligent chips, high-sensitivity sensors, the detection results are more accurate, and the sound alarm function is supported. Non-contact detection, direct blowing, it avoids the growth of bacterias in the blowpipe, and the measurement method is healthier. Built-in high-capacity battery, low power consumption, long standby time, one full charge can be used about 150 times. Premium ABS material, fine workmanship and long service time. Small and portable, convenient for testing anytime, anywhere. Specifications: Color: Black Material: ABS Display: LED Screen Test Range: 0.000-0.199%BAC(0-1.9g/l) Accuracy: andplusmn;0.005%BAC Response Time: andlt;5 Seconds Warm-up Time: 10 Seconds Blowing Time: 10 Seconds(Usually 3-5 Seconds) Input Power: 5V, 1A Battery: Built-in 3.7V, 120mAh Lithium Battery Working Temperature: 0-45 Item Size: 58.74 30.6 13.5mm/ 2.3 1.2 0.5in Item Weight: 19g/ 0.7oz Package Size: 100 77 22mm/ 3.9 3.0 0.9in Package Weight: 46g/ 1.6oz Note: Recommended to perform the test 20 minutes after drinking, and the measurement results are more accurate. Packing List: 1 Alcohol Tester 1 USB Cable 1 Userand 39;s Manual