Fangrui Product Details Solar Bulb For Anywhere: With Its Dusk-to-dawn Design, This Solar Light Bulb Automatically Turns On At Dusk And Off At Dawn. Its For Areas Without Electricity, Such As A Shed, Chicken Coop, Or Garage, And Can Light An Area Of About 100 Square Feet With Just One Bulb. Solar And Mini Usb Power Port, This Solar Light Bulb Can Collect Solar Energy Through The Solar Panel. When There Is Sunlight During The Day, Connect The Solar Panel To The Light Bulb Via A Usb Cable, And The Solar Panel Converts Solar Energy Into Electricity And Stores It In The Battery Of The Light Bulb. The Led Bulb Can Also Be Through A Dc 5v Adapter Via A Usb Cable, And It Can Keep Lighting For 5-8 Hours After Being Fully (it Can Also Be With A 5-8v Power Adapter). Powered By Solar Energy, Pure, Inexhaustible, Environmentally Friendly, 0 Electricity Bills. Only Need To Charge For 5 Hours, You Can Enjoy Up To 8 Hours Of Uninterrupted Use The Light Is Very Convenient To Use. [easy To Install]fix The Solar Panel Outside In A Sunny