Recharged by solar power it provides emergency power for your mobile device. Recharge by USB port connection or solar cell. Includes Micro-USB recharge cable for Android and other devices. Has 1000 mAh built-in battery. If charging this item using the sun it will take approximately 20 hrs to charge fully. If charging this item using the USB connector it will take approximately 2-3 hours to charge fully. If using to charge a cell phone it will take approximately 2-3 hrs to charge the phone fully. 3 5/8" W x 1 5/8" H x 1/2" D. Packaging: Boxed. Imprint Area: 2 3/4" W x 7/8" H on Back (standard/2 color max). Please call for availability of rush delivery.