Product Name; Handheld halter two-in-one fanCharging Method: 5V1A Micro USB incense insertedCharging time: DC 5V/1A 3 hoursUsage time: about 4-22 hoursBattery: 18650 lithium battery [2000 mA] * 2=4000 mAColor: black, red and whiteSize: length 330 * 190mmPower; 1.5- 4WColor box size: 272*180 * 30mmWeight 350g;Material: ABS siliconeItems in the package: Fan USB cable;Handheld 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.