Description: Breathalyzer: high sensitivity, LCD display, anti-interference, stable performance, high accuracy. Built in purification chamber: filter impurities and accurately detect alcohol content. LCD display screen: 3 color messages on the screen, distinguishing high and low values and accurate detection .USB charging port: charging is more convenient and faster. Small and portable: light and compact, prevent drunk driving. Specification: Rated voltage: 5V Power: 2W Battery capacity: 120mAh Standby time: 100Day Operating time: Heating time: Response time: less than 5 seconds Alcohol concentration range: 0.0g/L-1.9g/L (0.00% BAC-0.19%) Operating temperature: 5-85 Celsius Net weight: 29g Product size: 74.6mm x 42.6mm x 18mm Package includes: 1Pc breathalyzer 1Pc charging cable Note: Please allow slightly errors due to manual measurement and different monitors.