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 just by blowing to the instrument, don't need to contact. Advanced flat-surfaced alcohol sensor with high sensitivity and quick response. Large LCD screen with backlight, convenient for night use. Compact design and portable size, convenient to carry. Dust-proof baffle, switch integration. Free to use, don't worry to drink driving test. Easy to read the result with drunkenness alarm light. Drunkness turns red, alcohol turns yellow and th light turns green without alcohol. Widely use: Drink overnight, Drunk driving, Feel tipsy at a bar, Drink with friends at KTV , Family Dinner, Company annual meeting, etc. Specifications: TypeTY-H9 Color: Black Material: ABS Power Supply: 200mAh Battery (not included) ChargeUSB Charging Input: 5V 1A Blowing Time: 10s Responding Time: 10s Measuring Range: 0.01-0.19% Accuracy: 0.01% BAC Package Size: 10.1 * 2.7 * 1.5cm Package Weight: 47g Package List: 1 * Alcohol Tester