The Groov-e Portable Solar Charger is a slim, powerful and also water resistant Capable of charging a smartphone fully in under 2 hours, the portable Solar Charger is also able to charge iPad/tablets, e-readers and even portable GPS systems. Intelligent charging accurately gauges and supplies the correct power required for each device, whilst overcharging is eliminated by automatically switching off the charge once the device has reached full capacity. For convenience, users can always check how much charging power is available from the battery level indicator. The solar charger gains power from the sun while you're out and about, keeping your devices charged. IPX4 rating means it is water resistant, while the carabiner clip, built in compass and flashlight torch within the unit make it your must have travel gadget! What you can charge Smart Phone: Up to 4 times Tablet: Up to 2 times GPS: Up to 4 times Mobile Phone: Up to 7 times e-Reader: Up to 3 times MP3 Player: Up to 7 times Spec