1. Material: aluminum alloy 2. Battery capacity: 3.7V/200mAh 3. Rated voltage: 5V 4. Rated current: 0.15A 5. Test mileage: 0.0-1.3g/L 6. Multiple filtration, separation of impurities, more accurate values 7. Filtering and anti-interference algorithm, rapid detection of values 8. Using highly sensitive semiconductor sensors, low power consumption, lossless conversion, and accurate values 9. Exceeding standard reminder and buzzer alarm 10. Non-contact air blowing to prevent secondary pollution 11. LED high-definition digital display, dual unit display 12. Using Type-C charging port, it can be used continuously for 150 times when fully charged.