MATRIX 15W 3-Panel Foldable Solar Power Bank with Dual-USB 5V/2A Output 15W TRIPLE SOLAR PANEL &gt;&gt; Charge your favorite mobile USB devices by exposing the high-efficiency solar panels to direct sunlight. TWO USB CHARGING PORTS &gt;&gt; Forgot to charge your phone and tablet?! No worries! Charge them both at the same time with 2x 5V/2A USB ports (up to 3A max output). RUGGED DESIGN &gt;&gt; Water, dirt, and shock resistant. Nylon canvas covering. Intended for outdoor use - perfect for the active techie! ON-THE-GO CONVENIENCE &gt;&gt; Lightweight and foldable, carry unlimited solar charging power in the size of a notebook. 100% COMPATIBILITY &gt;&gt; Smart USB technology provides 100% charging compatibility at the fastest charging speeds for all of your devices.