1. Noise: 36dB or less
2. Features: three gears of wind, simulating natural wind, base function, strong battery life, low irritability work
3. Weight: 182g
4. Size: 199x92x38mm
5. Charging time: 3 hours
6. Input current: 5V/1A
7. Power supply mode: USB/built-in lithium battery
8. Battery capacity: 1200mah
9. Use time: 1.5-4 hours