AM01 USB Rechageable Alcohol Tester Handheld Digital Alcohol Breath Tester 1. High-definition display, precise digital LED large-screen display, three-color indicator light is easy to read and clear at a glance. 2. Sophisticated algorithms to remove impurities and retain alcohol. Alcohol quality automatically removes mobile impurities for more accurate detection. 3. USB power supply, built-in high-capacity lithium battery, can be used about 300 times on a single charge. 4. No mouthpiece contact required. Safer and more hygienic, measuring healthier. 5. Equipped with smart chip, high sensitivity sensor, more accurate measurement. It is recommended to start the test 20 minutes after drinking parameter: 1. Color: Black 2. Sensor Type: Semiconductor Sensor 3. Display: LCD liquid crystal display (black and white) 4. Shell material: ABS plastic 5. Test range: 0.00-0.19%BAC (0-1.9gl) 6. Measurement unit: mgl (BrAC) mgml (BAC) 7. Measurement method: quick survey, automatic detection 8. Measurement time: 20 seconds 9. Power: built-in rechargeable polymer lithium battery 10. Use battery: 3.7V 200MAH can test 300 times continuously 11. Power adapter requirements: DC5V 1A 12. Working temperature: 0-45 degrees Celsius 13. Warm-up time: 10 seconds 14. Blowing time: within 10 seconds, more than 4 seconds required 15. Response time: less than 5 seconds 16. Working current: 250MA (max) 17. Standby current: less than 20UA 18. Product size: 8.2 x 2.4cm 19. Product weight: 20g packing list: 1 x Alcohol Tester 1 x USB cable 1 x User Manual