We design it as a compact (pocket size), lightweight (0.56 lb.) and durable charger (waterproof, dustproof, shockproof). This solar sub charger with a capacity of 20000mAh and a high-quality ion polymer battery. Not only can it be charged via a power adapter, but also equipped with a solar panel for people to charge the portable charger by sunshine. Our battery pack has an ultra-bright LED flashlight with 3 powerful lighting modes such as steady, strobe and SOS, and the illumination range can reach 40 meters. The back of the external battery power bank is also equipped with a compass to help you find the right direction if you are lost. SOLPOWBEN solar phone charger will be your great partner for outdoor sports.