Feature: 1. Useful breathalyzer to accurately the body alcohol content(BAC) just by blowing to the instrument. 2. Flat-surfaced alcohol sensor with high sensitivity and quick response. 3. It can give a warning when alcohol content is over 0.050% BAC with smart MCU control. 4. Large LCD screen with backlight, convenient for night use. 5. Compact design and portable size, convenient to carry. 6. Auto power off, energy saving and easy to use. Specification: This alcohol tester is designed for accurately measuring the body alcohol content. It is easy to use, it measures the alcohol content just by blowing to the instrument. Compact design and portable size, convenient to carry. Features: Useful breathalyzer to accurately the body alcohol content(BAC) just by blowing to the instrument. Flat-surfaced alcohol sensor with high sensitivity and quick response. It can give a warning when alcohol content is over 0.050% BAC with smart MCU control. Large LCD screen with backlight, convenient for night use. Compact design and portable size, convenient to carry. Auto power off, energy saving and easy to use. NOTE: To ensure the accuracy of the measurement, it is recommended to measure 2-3 times and time interval is over 3 min. Specifications: Material: ABS Color: Black LCD Size: 1.7" Measuring Range: 0.000-0.199%BAC Accuracy: ±0.01%BAC BAC Alarm: 0.050%BAC Power Supplying: 3 * 1.5V AAA Batteries (not included) Item Size: 103 * 75 * 28mm / 4.06 * 2.95 * 1.10in Item Weight: 60g / 2.12ounce Package Size: 158 * 105 * 50mm / 6.22 * 4.13 * 1.97in. Package Weight: 75g / 2.65ounce Package List: 1 * Alcohol Tester 20 * Mouthpieces 1 * User Manual Package List: 1 * Alcohol Tester 20 * Mouthpieces 1 * User Manual