Features: Ensure safe driving with our professional breathalyzer, featuring advancing technology for quick and accurate blood alcohollicity concentration measurements. This breath alcohollicity tester boasts a noncontact designs, a easy to read lcd display, and automatic calibration to maintain precise and reduce human errors. For driver, especially business professional who frequently attend social event, as well as family seek safety assurances and traffic enforcement officers conducting roadside check. Perfect for pre drive self testing, post party evaluations, and use in restaurants to ensure patrons is fit to drive, enhancing community responsibility. This breathalyzer is designing for convenience, allowing you to conduct alcohollicity tests anytimes, anywheres, ensuring peacing of mind on road. Specifications: Component:Plastic Size:Approx.94x25.5mm/3.7x1inch Color:Black Package Includes: 1 Set Breath Alcoholicity Tester note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.