Waist Clip Fan, Portable Necklace Fan : 5-22 hours Work, 3 Speeds, Rechargeable Battery Operated & Personal Waist Fan Suit for Sport, Work Outdoor (Black) 【Longer Working Hours, Battery Operated & USB Powered 】: Hurricane season good helper. The rechargeable small desk fan operates with 5000mAh and can operate for 5-22 hours after a full charge. Cool you at work site or outdoor for a whole day without any worry about power off. you can charger it be used via USB port from your PC/computer/USB charger or other USB devices. 【Convenience Waist Fan & Neck Fan】: Portable hanging neck & waist design, You can hang the viniper fan around your neck or waist, and take it everywhere. it will makes you look cool. At the same time, you could used as a small desk fan or hand fan according to your want. 【3-stage adjustable wind speed & Quietness】: Small but poweful. 3-stage easily adjustable wind speed. The speed of this portable desk battery fan can also be adjusted among low, medium, and high according to your demands. it is decent and quiet which ensure the peaceful flow of air, and enough for personal use. 【Mutipurpose & Portable】: Used high-quality ABS and Brushless copper motor. It has stable performance and long operating life. And It is trouble-free to put this small ( 107*76*43mm, weight-187g) and the exquisite battery usb fan into your bag and carry it for outdoor events. Also, it can be used for indoor use. Ideal suitable for outdoor work, family, dormitory, car, camping, beach, sports use and etc.