Portable Semiconductor Ice Compress Hanging Neck Leafless Fan(Silver Gray)

1. Large-capacity battery, long-lasting battery life 2. Brushless silent motor, no noise 3. Outer centrifugal bladeless turbofan, the hair is close without twisting 4. Three gears of high wind power, adjustable at will, soft breeze, comfortable and cool 5. Noise: 36-45db 6. Rated voltage: 3.7v 7. Working voltage: DC 5v 8. Battery life: 3-6 hours 9. Rated power: 5w 10. Power supply mode: USB 11. Battery capacity: 4000mah 12. Material: ABS+electronic components 13. Charging time: 1-2 hours