Sendida Mini USB Portable Fan - with Rechargeable Battery, Stroller Clip on Table Fans, Speed Adjustable, 360 Degrees Rotate and Quietness (Blue) The Sendida USB Mini Fan provides a variety of power supply, which can use USB charged directly or be battery-powered, both make it conveniet and portable to use. This clip fan have a rechargeable 18650 2200mAh lion polymer battery, can be charged by the USB cable which provides strong power output for 2-6 hours by different speeds. The portable fan will swivel and angle up or down - both actions are able to do a 360 degrees rotation by adjusting the angle to anywhere. These mini fans are perfect for the kids. As the USB DC safety power be not any accident to baby. Tight structure, soft silicone fan blade, gently wind are all designed for your kids. It easily and securely attaches to anything by the fan's clip, including the carrier handle or on something has a ledge like a table, a chair, a pole, a baby stroller, or you can use the fan holder base on the desk directly without clipping.