Features: Ensure Safe Driving This portable tester accurately measures blood alcohol levels, promoting driving safety. Quick and Reliable Results With its high sensitivity, this tester delivers fast and dependable test results. Suitable for Various Users Designed for individuals who require frequent testing and law enforcement personnel. Versatile Usage Scenarios Use this tester at home, parties, bars, or restaurants to promote responsible drinking habits. Thoughtful Gift Choice Present this tester as considerates gift to remind loved ones about responsible alcohol consumption. Specifications: Material: ABS Item size: approx 80x20x16mm/3.15x1x0.6inch Style:English/Japenese(optional) Test ranges: 0.00-0.19% BAC(0-1.9gram/l) Measurement mode: Quick troubleshooting, automatic detection Measurement time: 20 seconds Power supply method: built-in rechargeable polymer lithiums battery Using battery: 3.7V 120MAH Power adapter requirements: DC5V1A Working temperature: 0-45 ℃ Preheating time: 10 seconds Blowing time: 10 seconds, required to be greater than 4 seconds Reaction time: less than 5 seconds Package Includes: 1xPortable Breathalyzer note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.