Specification: Type: Digital Alcohol Tester Detection range: 0.00-0.19 BAC and 0.0-1.9g l Function: speaker, Auto off wihthin 1 minute Battery: 2 1.5 V AAA alkaline batteries (NOT INCLUDED). Working time: Heating: 10 seconds Response: 5 seconds Ambient temperature: 5-40 degrees Size: 112 68 22 ê mm ê? 4.4 2.6 0.8in Package List: 1 Manual 1 Digital Breath Alcohol Tester (OPP bag) 5 Inhaler Sleeves Note: 1.Please note that the battery is NOT included in package.Alcohol Tester can analyze the concentration of alcohol in the blood at any time and anywhere, which is very convenient. Easy to use: quick response and with automatic shut down function. Digital display: which can improve the detection efficiency. Portable design, which is very easy to hold in your hand,and carry in your pocket, car or handbag. Alcohol Tester can analyze the concentration of alcohol in the blood at any time and anywhere, which is very convenient. Easy to use: quick response and with automatic shut down function. Digital display: which can improve the detection efficiency. Alcohol Breathalyser made of high quality material, lightweight and durable in use. Portable design, which is very easy to hold in your hand,and carry in your pocket, car or handbag. Alcohol Breathalyser made of high quality material, lightweight and durable in use.