Features: 1Digital Display: The alcohol tester uses numbers to display the results of alcohol concentration, and has a prompt sound, which is clear and intuitive. 2Strong Functions: The alcohol tester has the function of automatic shutdown and power saving, selectable alarm points, and has a quick response machine recovery speed. 3ABS Housing: ABS has good wear resistance and light weight, which saves effort when users hold it with single hand. 4Replaceable Mouthpiece: The mouthpieces on the alcohol tester are replaceable, and 5PCS mouthpieces are delivered in our kit, which you can replace by yourself. 5Wide Application: Alcohol detectors are widely used in drunk driving, alcohol production, safety inspection, fire safety, express delivery, coal mines, fleets, enterprises, and construction sites. Package included: 1 x&nbspBreathalyzer 1 x Instruction 5 x Mouthpiece 1 x Storage Bag