Hand-cranking charges the internal battery.
To charge your smartphone, simply plug it into the radio's 5V 2A USB port. Power will automatically “dump charge” to your phone, just like plugging into the wall. The FR1 has enough power to fully charge most smartphones when fully charged.
DC power input via micro-USA cable (included)
2000mAh rechargeable lithium battery
LED flashlight plus glow-in-the-dark locator
Dimensions: 2.4" x 5.4" x 2.6"