2-pack of Hand-crank Searchlight Lanterns with USB Chargers Blue Built-in rechargeable batteries and hand cranks Easily charge the lantern by cranking the handle No external power source needed Approx. 7.9"L x 3.8"W x 5"H each Built-in 1000 mAh USB charging ports Charge your mobile phone or tablet USB input port Charge your lantern without cranking (USB cable not included)