wholesale mini sports fan usb portable fan hands-neck hanging usb charging mini portable fans 3 gears usb air conditioner

hanging neck generation parameters: factory direct double-head sports hanging neck fan parameter: battery: 18650-3.7v capacity: 1200 mah product weight: 180g power consumption: 0.3-1.2w life time: 2-6 hours charging input: dc5v1a interface type: micro5p charging time: about 2 hours