Handheld Clip Fans , TFSeven Rechargeable USB Fan Portable Desktop Table Fan with Bulit-in Battery USB Powered with 3 Modes Speed Adjustable Personal Fan Emergency Power Bank Fan Cooling Fan (Green) Mini USB Fan with 3 speeds, quiet and simple operation. Could connect the fan with USB cable to power bank and computer or any USB outlet , or using a adapt plug to charge the fan battery. International standard 18650 capacity lithium battery provides exceptionally long using time and strong power output. Compact and versatile, this fan is designed for personal space. Mini size and light weight,Simple design, crisp color.Great for traveling in hot weather.