UPGRADED Long Life Rechargeable Battery Operated Fan: 3600mAh battery(built-in) supports Max 24H working. One full charge works for about 8-24hrs depending on the settings. Back to school supplies, school supply..2 in 1 USB & Battery Powered Fan: KARECEL tiny fan is powered by not only battery but also USB, it is chargeable fan so you don’t always have to have it plugged in, you can place it anywhere and everywhere you go. This little fan can be charged via USB port from your computer, power bank, USB charger or other devices with USB output. Perfect wireless fan for office, school, home, dorm, study, library, games room, summer travel or outdoor sports or any activities..3 Speed Settings and 180 Degree Rotating fan: This usb desk fan provides 3 settings of the air flow speed and can be adjusted among low, medium, high according to your demands. Adjustable wind direction option, it can swivel up and down which helps you get the perfect angle..6.2 inch Mini Fan - Small but Powerful! This small fan made with a brushless motor that bring you long lasting and strong breeze experience. 4 inch fan blades produces a strong airflow(1800rpm-3200rpm depending on the speed settings).Quiet Desk Fan & Portable Fan: The uniquely engineered fan blades provide quiet, powerful cooling for your home or office. The max noise is close to 40dB. The rubber feet keep it stable, stops it from moving around, and insulates any vibrations from making any noise. Not disturbing your rest and work. The battery fan is very compact and can literally be taken anywhere(9.5oz lightweight small desk fan). No hesitate to contact us if you have any problems, 24/7 quick reply.