Feature: 1. No need for mouthpiece contact, safer and more hygienic, avoids bacteria breeding in blowpipe style, healthier measurement. 2. High-sensitivity chip, high-precision sensor, equipped with intelligent chip, high-sensitivity sensor, more accurate measurement. 3. Scientifically filters and purifies impurities, retaining alcohol. 4. Large LED screen display, easy to read clear values. Specification: Features: No need for mouthpiece contact, safer and more hygienic, avoids bacteria breeding in blowpipe style, healthier measurement. High-sensitivity chip, high-precision sensor, equipped with intelligent chip, high-sensitivity sensor, more accurate measurement. Scientifically filters and purifies impurities, retaining alcohol. Large LED screen display, easy to read clear values. Three-color indicator light, easy to understand without confusion, simple to read clear values, drunk driving alarm sound reminder. High-capacity lithium battery, can be recharged and used, USB charging, one charge can be used about 300 times. Specifications: Color: black Accuracy:+0.005% BAC Reaction time:<5 seconds Warm-up time:10 seconds Power supply:USB charging port Test range:0.000~0.199%BAC Blowing time:10 seconds (usually 3~5 seconds) Product Size:24mmx17.6mmx82.4mm Package weight: 50g Package size: 10*3*3cm 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