10000mAh Portable Waist Fan with Belt Clip, 5 Speeds, Flashlight and Rechargeable Battery, Hands-Free Personal Cooling Fan for Outdoor Camping and.... Built-in 10000mAh rechargeable battery provides up to 40 hours of operation depending on speed and light settings. Five adjustable speed levels and a high-speed motor provide flexible personal cooling for outdoor work and travel. Multifunctional design can be clipped to a belt or clothing, worn with a lanyard or placed on a desk. Usb output allows the fan to serve as an emergency power source for compatible mobile devices. Integrated flashlight and portable hands-free design support camping, travel and outdoor activities.