4,000 mAh, high charging capacity and resistant external auxiliary battery for solar recharging

4,000 mAh, high charging capacity and resistant external auxiliary battery for solar recharging. Water resistant and silicone coated with a sporty design, especially designed for outdoor activities where there is no access to an electric charging source. Featuring dual USB output for charging two devices simultaneously and charging indicators. With a powerful SOS LED signaling light, designed for emergency situations. With aluminum carrying carabiner and including a resistant micro USB cable. Presented in an attractive design box.