1. This design is suitable for outdoor people. Even if the temperature is too high, 't worry about it outdoors, because this fan can calm you down, which is a necessary product in summer.2. Emergency mobile power supply, charging+cooling in one, with USB interface, 5V/2A output, can emergency charging for your mobile device3. Built-in 10000mAh polymer high-capacity battery, ultra-long and durable life4. Three-stage wind regulation, can freely the appropriate air volume, and enjoy more comfortable cooling5. Portable and lightweight design: carry it with you when you go out, and the waist is tailored, especially suitable for summer travel or outdoor sports. You can take it with you, such as office/park/watching competitions/mountaineeringProduct name: outdoor waist fanModel: M22Rated power: less than 10WMotor speed: 6500 rpm high speedWind regulation: three strong windsPolymer battery capacity: 10000mAhEndurance: 6-15hEmergency mobile power supply: reverse charging with usb interfaceProduct size: 90x 51 x117mmColour:BlackMaterial:ABS Package Contents:1 x Hanging waist fan1 x Charging cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.