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. Built-in purification chamber can help effectively filter impurities, leaving only alcohol, so that the test results are more accurate. Equipped with intelligent chips, high-sensitivity sensors, the detection results are more accurate, and the sound alarm function is supported. Non-contacting detection, direct blowing, it avoids the growth of bacte ria 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 500 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) Measurement Unit: mg/l (BrAC) mg/ml (BAC) Measurement Time: 20 Seconds Power: 5V, 1A Battery: Built-in 3.7V, 240mAh Lithium Battery Warm-up Time: 15 Seconds Blowing Time: Within 10 Seconds, More Than 4 Seconds Required Response Time: <5 Seconds Working Current: 250MA (Max.) Working Temperature: 0-45℃ Item Size: 95 * 25 * 15mm/ 3.7 * 1.0 * 0.6in Item Weight: 22.5g/ 0.8in Package Size: 120 * 80 * 30mm/ 4.7 * 3.1 * 1.2in Package Weight: 57.4g/ 2.0oz 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 * User's Manual