Features & Functions 1.It adopts environment friendly lithium-ion polymer with high quality, with capacity of 480mAh. 2. Powered by solar energy. 3.Suitable for products with voltage of DC 5 V±0.5V and current of ≤500mAh. 4.With two types of output port, it can charge iPhone or Blackberry directly without using connector; it is also suitable for various digital products which have mini USB charging function, such as: MP3 player, MP4 player, PMP, GPS, Bluetooth etc. 5.Super long lifespan, after 500 cycles of charge and discharge circle, the capacity remains more than 80%. 6.Smart protection chip: over-charging protection, over-discharge protection, overload protection, short circuit protection and low battery warning. 7.It is convenient to charge your digital products at anytime and anywhere. 8.Elegant appearance, lightweight, convenient to carry.