Product Name: Table fanWorking mode: The Fouth GearMaterial: ABS PP electronic componentsMotor: brushless motorBattery capacity: 2000mAhProduct Size: 128*45* 212mmCharging time: 2.5 hoursWorking time?2-8 hoursHandheld Mini Fan USB Charging Portable Fan1.? Longer Working Hours, Battery Operated & USB Powered ?Hurricane season good helper. It can also be used via USB port from your PC/computer/USB charger or other USB devices.2.it is decent and quiet which ensure the peaceful flow of air, and enough for personal use.The Viniper small desk fan has a strong and stable wind that keeps you cool. not disturbing your rest and work.3.?Safe & Portable?Used high-quality ABS and Brushless copper motor. It has stable performance and long operating life. And It is trouble-free to put this small and the exquisite battery usb fan into your bag and carry it for outdoor events. Also, it can be used for indoor use. Ideal suitable for office, family, dormitory, library use and etc.