Come and see our amazing products.Built-in 4000mAh premium lithium polymer battery, equipped with a high performance solar panel, anti-explosion, lightweight and reliable with carabiner.It has two charging methods(USB &Solar) Perfect for outdoor activities, like camping, traveling, riding, fishing, hiking and beaches. Using super bright LED lights,made of durable ABS+PC+Silicone material , IPX4 waterproof and the extra rugged corner protect the battery from dust and damage. Compatible with all USB Devices, can charge 2 devices simultaneously.Add your custom logo to make a lasting impression.Pls confirm further with us if any query about packing info, inventory status and time schedule.