LEYSHIZ Solar Powered Led Light Bulb Portable Led Solar Lamp Spotlight with 0.8w Solar Panel for Outdoor Hiking Camping Tent Fishing Lighting with Micro USB Charging port for Indoor Charging No electricity required or Can be Charged indoor using your own Wall Adapter/Powerbank/Laptop/Computer 2 way charging option. sunlight during daytime or electricity using micro usb data cable (included). High efficiency solar panel charger is included. Incase of power outage solar panel with micro usb can charge android phones or any micro usb gadgets. Bulb Can be charged thru Wall, Computer using your own charger or using Powerbank for emergency.Solar Panel Can charged your Cellphone, Mobile phones, etc (with micro - usb port) Widely and Popular use for emergency, camping, fishing, etc.