Feature:1. A simple method to analyze the concentration of alcohol in your blood anytime, anywhere.2. Non-contact testing, no mouthpieces required, healthy and environmentally friendly.3. Digital backlit LCD display with a warning tone, it is clear results both in days and nights.4. Automatic shutdown design, and quick response and recovery.5. Comes with a nylon rope, practical and easy to carry.6. Easy and simple to use, your BAC results will be displayed on a bright LCD screen after 5s.7. High precision and wide test range design, the range of tests for measuring blood alcohol levels from 0.00-0.19％ BAC.Specification:Condition: 100% Brand NewItem Type: Alcohol Breath DetectorMaterial: ABSColor: BlackLight: Red LEDTest Range: 0.00-0.19% BAC and 0.0-1.9g / lPower: 2 x AAA batteries (not included) Package List:1 x Alcohol Breath Detector1 x Nylon Rope1 x Manual Note:1. In order to get more reliable record as possible, advise that you should make the test after least 45 minutes after drinking.2. After drinking , it is recommended to wait 20 minutes before testing, because alcohol takes about 20 minutes into the blood from the digestive organs , and residual alcohol in the mouth takes time to dissipate .3. To get a more accurate result , the distance should be at least three minutes between each test .4. Do not use benzene , gasoline and thinners cleaning product ingredients tester .5. Do not allow any liquid penetrated into the sensor.6. For your safety and the safety of others, do not drink or drive.7. For aviation security reasons, this product delivery without battery.(using 2 AAA batteries)