This solar charger is made of higher efficiency sunpower solar cell, the efficiency rate is 22%~25%, most normal monocrystalline solar cell efficiency in the market is about 15%.
The solar charger has 2 USB output ports, you can charge the 2 devices at the same time. The charging speed as fast as wall socket charging when sunlight is strong enough.
The solar charger is made of foldable design. You can pack it become small size and put it into your backpack when at outdoors.
There are rich accessories as free gift, such as micro USB charging cable, carabiners help you charging convenient more at outdoors.
We offer 18 months warranty period, most others suppliers' warranty is 12 months warranty generally.