The structure of this fans are unique and fashionable. Equipped with a brush and slot less motor too. It ensures the high wind and long-life. This USB rechargeable fan has an Intelligent control system for reliable performance. It are lightweight rechargeable fan fully functional and user-friendly. It uses international standard 18650 capacity lithium batteries that can be recycled and incurred a low cost.The advanced power management technology provides a variety of power supply, one of which are too,, use USB directly or be battery power bank, which makes usage really easy. It are available at a reasonable price.