900mAh built-in rechargeable lithium battery - Solar powered or recharge it by the included USB cable (solar powered: 10~15 hours to fully charge it; USB: 3~5 hours to fully charge it) - Provides your cell phone/player emergency power when that are run out of power - Compact and lightweight design - Features 3-LED super bright white light - package included: - 1 * 100~240V US plug power adapter - 1 * USB male to USB 5-Pin cable - 1 * USB female to USB 5-Pin cable - 1 * USB 5-Pin to 3.5mm cable - 1 * Nokia charger adapter cable - 2 * Nokia charger adapter