This is a new model of the solar power bank has a 5000mAh lithium polymer rechargeable battery which can be charged via the USB cable or the handy solar panel. If you don't have electricity to charge your phone, place the solar power bank in direct sunlight and you can get an output of up to 200mAh. To be able to utilize the full 5000mAh, the power bank must be pre charged, before use. The solar power bank is supplied with a 3 in 1 cable and free carabiner. It's water resistant and durable due to its stylish rubber casing. This waterproof solar charger features 2 USB outputs and an emergency LED flash light.