equipped with our latest and smart algorithm, which can quickly and accurately detect the alcohol content in breath with pinpoint accuracy. It works seamlessly using your phone's power and displays comprehensive data via an app. Featuring a long-lasting battery, stylish design, and portability, it's the perfect companion when you're . Compact and portable Plug and play Intelligent interaction Blow detection Product Specifications Test object: alcohol Measuring range: 0-200 BAC Operating temperature range: 0C to 40C Resolution: 1 BAC Colour:Black Material:ABS Package Contents: 1 x Portable alcohol tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.