1. Type-C charging port, convenient and fast charging 2. Clear large screen, with flashing light reminder 3. When blowing, continuous drip sound prompt is provided. No blowing will not automatically test, effectively preventing false cheating 4. Multiple people can be tested continuously, saving time 5. Quick detection, results are out in seconds, specifically for testing overnight alcohol 6. Rechargeable lithium battery, can be used for a long time after one charge 7. Test records: 50 items 8. Battery capacity: 200mAh 9. Size: about 16.1 x 3 x 2.8 cm
