Solar charger 21W Solar Panel with Dual USB Port Waterproof Foldable Solar Cells for Smartphones Tablets and Camping Travel

This solar charger totally relies on clean green solar energy,which is endless and environmental friendly,perfect for charging your Phone when hiking camping and outdoor activities.
PS: without battery and can't store the power, use it outdoor in sunny day.

Specification:
Power input: 21W High-efficiency Panel 
Power output: 5V Standard USB port x 2
Folding Number:3pcs
Transformation efficiency:＞18％ 
Output current:4.2A Max
Material of bag:600D polyester
Folding size:290*164*30mm
Unfolding size:680*290*5mm
Net weight: 0.86kg
Color:Black+Blue, Support customized logo printing and customs color

Note:
This solar panel charger does NOT store power, you will need a power bank to store power or connecting to your device directly to charge.

Using the power of three High efficiency solar panels, the 28W Solar Charger is your new best friend when you're far from home. Travel with ease using the charger's bungee loops which attach to your backpack. Unfold the device and expose the 28 watt Monocrystalline solar panel, each section putting out approximately 1500~1600mA under strong sunlight. Dual USB charging ports allow up to two devices to recharge at once at a maximum output current of 4.2 Amps total. No matter where you go, the Solar Charger will be ready for you. 
Dual USB Ports 
Dual USB ports with maximum 4.2A total output and capability of charging two devices simultaneously. Keep your devices fully charged on the go in no time. USB port with intelligent recongnition and automatic restart function.
High Quality: 
The canvas is created to withstand rugged durability for outdoor use. with Ultra lightweight (0.86) and ultra compact (352*180*30mm folded or 615*352*5mm opened) design, it easily fits in your backpack. 
Broad Compatibility: 
Compatible with all iphones, tablets, GPS, Camera and other USB-supported devices.