Portable and compact design The LED Breath Alcohol Tester is designed for easy portability and is a reliable companion for parties, road trips, or gatherings. Its compact size of 108 x 35 x 2 mm fits easily in a pocket or bag. User-friendly operation A straightforward interface lets anyone quickly measure blood alcohol concentration with minimal effort. Just blow into the device and receive results via clear voice prompts in Chinese and English. Durable materials Constructed from ABS material, this tester resists wear and deformation. It is built for regular use and long-lasting performance. LED indicator lights The device features a tri-color LED indicator system (green, yellow, red) to provide immediate visual feedback on your alcohol level, helping you make informed decisions before driving or engaging in activities. Use scenarios - Before driving after a social event, to decide whether to drive, rest, or arrange alternative transportation. - On road trips or group outings to monitor personal intake and plan safe choices. - At parties or gatherings to stay aware of your level and participate responsibly.