Unifire&reg; Portable USB Cooler Electronic Cooling Fan Mini Clip Fan 360 Degree Rotation USB or 18650 Battery Powered (Pink) With clip on the bottom, can be use in anywhere you want. The middle part and the blades can rotate by 360 degrees without dead ends. You can also use the mini fans no matter in the home, walking in the park, traveling outdoors, studying in the school, working or painting 18650 international standard high-capacity lithium battery provides long life and strong power output, and it can use about 2-4-6 hours according different speed Unique design, creative style, made of high-quality ABS, has a solid structure and pressure-resistant. Safe to us. The advanced power management technology provides a variety of power supply. Use USB directly or battery-powered. Unifire after-sale service: 30 days money back;60 days return.