An ideal solution for charging your cell phone/ MP3 Player/ PDA/ DV when main power is not available in an emergency. A hand-winding charger with the interface of USB. Comes with the little strap as a key ring or bag strap. This hand winding charger is foldable and compact design for easy carry. It is in rigid solid plastic construction, durable and lightweight. Provides constant voltage output with easy hand-winding. USB connector and LED indicator for all sorts of USB devices. LED indicator is strong enough and can be used as a small flashlight.