Features:

Fast Charging Technology: automatically adjust the current and voltage to achieve Max power.
Dual-USB Port Smart Charging: 21w sunpower provides enough power to charge cellphone and ipad at the same time, great for any outdoor trips and activities.
Portable & Compact Design: Easily folded down into an small package, and convenient eyelets enable easy attachment to backpacks, trees, or tents while hiking.
Wearproof & Waterproof PVC Canvas Fabric: water-resistant protection for sunpower panel, but please note the interface is not waterproof.
No Built-in Battery: safer for use, also can be used with mobile power supply.

Technical specifications:

21w Solar Mono-crystalline (US SUN POWER)
Output: 5V/3A(Max)
Unfold size: 270x840x30mm/ 10.63inx33.07inx1.19in
Folding size: 270x160x40mm /10.63inx6.23x1.58in
Weight: 700g

How to charge your device:

Unfold the charging panel and orientate the panel towards the sun.
Connect your device to the solar charger USB port.

Package:

1x 21w Foldable USB Port Solar Charger

• Fast Charging Technology: automatically adjust the current and voltage to achieve Max power.
• Dual-USB Port Smart Charging: 21w sunpower provides enough power to charge cellphone and ipad at the same time, great for any outdoor trips and activities.
• Portable & Compact Design: Easily folded down into an small package, and convenient eyelets enable easy attachment to backpacks, trees, or tents while hiking.
• Wearproof & Waterproof PVC Canvas Fabric: water-resistant protection for sunpower panel, but please note the interface is not waterproof.
• No Built-in Battery: safer for use, also can be used with mobile power supply.