GEEDIAR Portable Mini USB Fan 3 Speed Control Rechargeable Table Desk Fan with LED light (pink) Three-speed design: provides you more choices in different temperature environment. Portable: Small and exquisite, easily into a bag inside . Perfect for outdoor activities and travel, or just place it on the desktop. Battery powered or USB charge: compatible with any USB port or wall charging with an adapter. Charging time: 4 hours. Blowing time: 8 hours at 1 speed, 4 hours at 2 speed, 2 hours at 3 speed Dimensions - Length: 3.54 in, Width: 1.46 in, Height: 4.72 in