Willone 21W Solar Panel Photovoltaic Cells Charger Battery High Efficiency 5v USB Output

Specification:
*Product Name: Moveable Solar Charger Bag
* Peak power:21W Max
* Output Voltage: 5V
* Output Voltage:Twin Usb
* Output Current:3.5A
* Solar Energy
Conversion Potency: 23percent
* Colour:Black
* Weight:0.57kg
*PCB Feature: Stabilized Voltage ,intelligent identifying, auto resuming
*Subject material: PET lamination sunpower solar panel with percent water evidence clothing
* Appropriate for: Cell Phones / Digital camera / MP3 / MP4 /for PDA / GPS and so forth