Best solar charger for iphone 4 ?

The best solar charger for iPhone 4 is folding solar charger. I have used it many times. It is awesome. This item is totally a multifunctional Folding Solar Charger, which can even charge for the mobile phone, PDA, MP3, MP4, digital camera, video camera, PSP video games, iPhone, Blackberry, Bluetooth headset, IPOD digital products. Foldable design, very much graceful appearance very much delicate and cabinet, Convenience to just take your fashionable elegance. USB interface output can also be suitable for most of the digital products, Especially which is suitable for anywhere which can obtain sunshine, realize very high efficient charging, use a convenient and a safe, environmental protection very much energy saving. It is a good for the promotion, sales, gifts etc.