Durable materials - the alcohol breath analyzer is made of high quality materials, lightweight and has a long service life. Digital display - this alcohol tester has a large LCD display with an orange background light . It is convenient for you to exhale with this alcohol at night.High Accuracy - this exhaled alcohol tester is used to measure alcohol concentration in human body. This portable alcohol tester is equipped with a sensitive semiconductor sensor that quickly gives results to know if you are going to drive. Keychain design - this alcohol tester saves space and is lightweight. Portable design, easy to hold in hand, also can be in your pocket, car or purse. Energy saving - this alcohol tester is powered by 2 AAA batteries (not included) which will automatically turn off 5 seconds after the end of the test to save energy. Every time you install the battery lasts a long time.Features:Be made of high quality materials, lightweight and durable.Digital display: which can improve detection efficiency.Easy to use: quick response and automatic shutdown function. It can analyze blood alcohol concentration anytime and anywhere, which is very convenient. Portable design, very easy to hold in your hand and carry in your pocket, car or purse .Specifications:Type: Digital tester Detection range: 0.00 to 0.19% blood alcohol content and 0.0 to 1.9 g/lFunction: speaker, automatic shutdown in 1 minuteBattery: 2 AAA 1.5V alkaline batteries (NOT INCLUDED).Working time: Heating: 10 seconds Response: