Advanced Technology This portable alcohol tester uses a density, accuracy alcohol analyzer with a 3generation sensitivity aluminum sensor and an intelligent chip to provide stable, antiinterference results. It detects breath alcohol concentration within seconds and displays the reading on an LCD screen. Secure Check Builtin 200 mAh battery with USBC charging provides reliable power. It can be used about 200 times per charge and is charged via USB adapters. Convenient to Carry and Hygienic Compact and stylish design for easy portability. Replaceable hygienic mouthpieces simplify sanitation, making it suitable for use at home or outdoors. Easy to Use Get accurate results within 10 seconds of blowing into the device. Simple to operate and ideal for gatherings with friends and family. A bright LCD screen ensures the reading is easy to read, helping you determine whether it is safe to drive. Usage Scenarios After social events at home or outdoors, check your BAC quickly to decide if you should drive. While traveling or during outdoor activities, verify sobriety before resuming tasks that require attention. Before work, driving, or operating equipment, confirm that your BAC is within safe limits.