Solar Paper 5 watt can Upgrade up to 15 watt (Please Choose the Option base on your need). The worlds thinnest and lightest solar charger. Charge any devices via USB cable. How To Pick the Right Solar Paper.The item "Yolk Solar Paper Portable Solar Charger USB High Efficient For Satellite Phone" is in sale since Tuesday, May 31, 2016. This item is in the category "Cell Phones & Accessories\Cell Phone Accessories\Chargers & Cradles". The seller is "tungnetwork" and is located in Kuala Lumpur. This item can be shipped worldwide.