1PCS Handheld Without Backlight Digital Alcohol Tester Digital Alcohol Breath Tester Breathalyzer Analyzer Profeional Detector Features: LCD display for easy reading. Answer us to deactivate Detection area: 0.00% - 0.19% BAC (0.0-1.9 g / l). Automatic shut-down Keychain size: Weighing, easy to make. Specification: size:112*68*22 Model: Breathing test and alcohol tester Colour: Black Accuracy: +/- 0.01% BAC (0.1g / l) Breathing test: Alcohol tester Package included: 1 * Alcohol Tester Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!