Features: Digital alcohol tester with audible alert. LCD backlight display for easy reading. Quick response and resume. Detect range: 0.00%-0.19% BAC (0.0-1.9g/l). Auto power off. Small size with key chain, light weight, easy to carry. Powered by 2 AAA batteries.(Not included) Can be reused at home 【HIGH ACCURACY & SENSITIVE BREATHALIZER FOR ALCOHOL】This breath alcohol tester is used to measure BAC (Blood Alcohol Concentration). With sensitive semi-conductor sensor, this portable breathalyzer can quickly give a result to judge whether you can drive or not(only 5 seconds). Provide you high accuracy test result(up to 0.01mg/l), four units of measurement can be converted(%BAC, BAC, mg/l, mg/100ml) 【LARGE DIGITAL LCD SCREEN】This alcohol breathalyzer has a large LCD screen with background Light. The back-light is convenient for you to use this Digital Breath Analyzer at night. 【ENERGY-SAVING & AUTO-OFF】Powered by 2 AAA batteries (not included), this keychain breathalyzer will automatically shut off to save power after finishing the test for 5 seconds. Moreover, it is designed with low power indication. NOTE: Please test after drinking for at least 20 minutes because it takes about 20 minutes for the alcohol to be absorbed from the digestive into the bloodstream. If testing immediately, it can only reflect the alcohol concentration in the oral cavity, not in the blood 【PORTABLE BREATHALYZER TO TEST ALCOHOL】This breathalyzer alcohol tester is space-saving, lightweight, portable, it is easy to hold and carry. You can put your breathalyzer into your bag when you do not use it. Pocket-size allows you take it anywhere and anytime, ensures your safe driving after drinking. Making it the top choice as a home breathalyzer. Great for wedding, parties, or other activities. Specifications: Color: Black Sensor: Advanced semiconductor oxide alcohol sensor Detect range: 0.00%-0.19% BAC (0.0-1.9g/l) Accuracy: +/-0.01% BAC (0.1g/l) Warm up time: Within 10 seconds Response time: Within 5 seconds Operating temperature: 10℃ ~ 40℃ Environmental temperature: 40% ~ 90% Power source: 2 * AAA batteries (Not included) Item size: Approx. 11.8 * 7 * 2.8cm / 4.6 * 2.7 * 1.1in Item weight: Approx. 68g / 2.4oz Package size: Approx. 14.4 * 11 * 3.5cm / 5.7 * 4.3 * 1.4in Package weight: Approx. 108g / 3.8oz Package included: 1 * Breath alcohol tester 5 * Mouthpieces 1 *Instruction Manual HIGH ACCURACY & SENSITIVE BREATHALIZER FOR ALCOHOL LARGE DIGITAL LCD SCREEN PORTABLE BREATHALYZER TO TEST ALCOHOL