New Office Desk Top Shaking Head Mini Fan Factory 4000mAh Large Capacity Bedroom Silent Usb Fan

Product information:

Power supply mode: USB
Category: Desktop Fan
Noise: 36dB or less
Rated voltage: 5V
Rated power: 2W
Wind speed gear: third gear
Operation mode: mechanical
Whether to support charging: support
Speed adjustment gear: third gear
Shaking your head way: shaking your head left and right
Built-in battery capacity: 4000mAh
Cell voltage: 3.7V
Use power: 7W (Max)
Battery: polymer 4000mAh
Input current/voltage: DC5V/2.1A (Max)
Charging time: 2A charging about 2.5h, 1A charging about 5.5h
Wind speed: low-end 1.5m/s, mid-range 2.5m/s, high-end 3.5m/s
Use time: about 7.5h for low-end, about 4.5h for mid-range, about 2.5h for high-end, and about 15h for natural wind

Packing list:
Electric fan X1