Feature: 1. Compact and convenient, precise measurement, high-definition display, abnormal alarm. 2. Built-in purification chamber, purifies impurities leaving only alcohol, avoids bacteria breeding in blowpipe style, contactless blowing, more accurate detection, healthier measurement. 3. Clear and easy to read, high-definition color screen, data display, one-second reading. 4. Detection indicator light, 3-color indicator light at a glance, data display, one-second reading, healthier measurement. Specification: Features: Compact and convenient, precise measurement, high-definition display, abnormal alarm. Built-in purification chamber, purifies impurities leaving only alcohol, avoids bacteria breeding in blowpipe style, contactless blowing, more accurate detection, healthier measurement. Clear and easy to read, high-definition color screen, data display, one-second reading. Detection indicator light, 3-color indicator light at a glance, data display, one-second reading, healthier measurement. Rechargeable lithium battery, long-lasting endurance, Type-C charging port, breaks traditional battery power supply, longer use, 200mAh battery capacity. Specifications: Color: black , white (optional) Product Model: A20 Product Material: ABS Charging Input: DC 5V Battery Capacity: 200mAh Sensor: High precision sensor Test range: 0.000~0.199%BAC Power supply interface: Type-C charging interface Product Size: L100mm *W28mm*H17mm Working Environment: 0~45°C Package weight: 50g Package size: 10*3*2cm Note: *There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package list: 1 * Breathalyzer 1 * Manual Package List: 1 * Breathalyzer 1 * Manual