Bear Motion BMXLN-288DS Self-Powered Dynamo AM/FM Radio with Flashlight, Solar Power and Cell Phone Charger – Yellow

Tip, to charge cell phone with the self cranking device, you need to keep cranking it to provide enough energy. For smart phones, you need to start cranking really fast until the screen shows normal charging, and then slow down to normal cranking speed. Built-in battery: Ni-Cd 300mAh 3.6V. Solar Continue Reading