With advanced semiconductor sensor, utilizes the same police-grade technology trusted by hospitals, clinics, and even law enforcement. These professional organizations trust our breath alcohol testers because they know they are the most accurate and reliable results possible, every time they test._x000D__x000D_Just one-button operation, it's easy to turn the device on and test it in seconds. wait for 10 seconds for warming-up, then blow with the tester for 5-6 seconds, the result will be after 3 seconds. Please test after drinking for at least 20 minutes._x000D__x000D_breath alcohol tester easily fits in a pocket or purse, making it a great portable breathalyzer for any occasion.Great for weddings, parties or other social activities,_x000D__x000D_With the LCD display, it is easier to read even in less than optimal light conditions and professional precision for safe driving. It will give you an alarm by beeping when the allowable limit is exceeded and the warning and danger symbol is displayed._x000D__x000D_features:_x000D__x000D_1. Digital display of alcohol concentration results with beeps_x000D__x000D_2. Alarm point can choose Red light backlight_x000D__x000D_3. Automatic shutdown power saving function_x000D__x000D_4. The mouthpiece is replaceable, and 5 mouthpieces are Red._x000D__x000D_5. Warm-up time: 10 seconds Response time: within 5 seconds_x000D__x000D_6. Test range: 0.00%-0.19% BAC_x000D__x000D_7. 2 "AAA" alkaline batteries (not included with this machine)_x000D__x000D_In order to accurate test results, please wait 20 minutes after drinking alcohol before taking the test. It is best that the test time is more than 3 minutes from the last test._x000D__x000D_8. Regardless of whether the product is used or not, manufacturers and sellers will not bear any responsibility for illegal activities. For example: drunk driving, working at heights._x000D__x000D_Everyone reacts differently to alcohol, so the test results are for reference only and cannot be used as a criterion for determining the results._x000D__x000D_Material: plastic_x000D__x000D_color: Black_x000D__x000D_Package Contents:_x000D__x000D_1 x Alcohol Tester_x000D__x000D_5 x mouth pieces_x000D__x000D__x000D__x000D_