Fangrui Product Details 3 Gears Wind Power Can Be Adjusted From Breeze To Strong To Meet Your Different Demands High Capacity: Li-ionbuilt-in, 5200mah In Total That Can Support 3rd Gear 4.5h, 2nd Gear 6.5h, 1st Gear 9h Dual Charge Mode Both For Your Indoor And Outdoor Use This Fan Can Be Easily By Ac Adapter Within A Few Hours Or By Solar Panel Outside It Comes With A Usb Port That Can Be Used As A Power Bank For Your Phone Power Supply Outdoors Equipped With Night Light Function And Music Player Function, It Can Provide A Light Source At Night In The Wild And Can Be Used As A Music Player At Parties. Power: 12w Solar Panel: 6w Polysilicon A Panel 9v Battery Capacity: 18650 Ternary Lithium Battery 5200mah Charger: 2a Adapter Charger Gear: 3rd Gear Charging Time: 2-3h Service Time: 3rd Gear 4.5h, 2nd Gear 6.5h, 1st Gear 9h Rotational Speed: 1280 Rpm Function Mode: Nightlight, Charging And Bluetooth Indicator Light, With 3-meter Bulb Light, Usb Charging Interface, Bluetooth And Usb Flash Drive To Fan Size: 12 Inches, Height 50c