This portable solar charger is built-in 10000mAh high capacity polymer battery and equipped with a compact solar panel, which could recharge the battery itself under sunlight. It has dual USB Charger Ports, dual LED flashlight and a compass on the back. A perfect item for outdoor activities and can be customized with your logo.Compact size with a free hook,easily hang it on your bag pack with the strap, hands-free on the go, enjoy portable power while camping, hiking, traveling, expedition and other outdoor activities.Great Promotional Product!