Ivation 3W Solar Panel Backpack, with 2 Built in Outdoor Speakers, 2200 mAh Waterproof Power bank/ Battery Pack Phone/Mobile Charger - 2 Ways Recharging, Solar powered 3W Panel directly to Sun while Biking, Hiking, Camping, or USB Cable to computer &ndash; LED Battery Indicator - for Outdoor Sports and Party&rsquo;s polyester Imported Includes Waterproof 2200mAh Emergency Power Bank/Backup Battery to Store Power 3W Solar Panel Absorbs Sunlight to power directly into your phone or into the Battery Power Bank You can charge your phone directly from the Sun via Built in USB cable, or true the Power Bank Backpack Features Large 1.5 CBF Zippered Pockets for Storing Phones Tablets, Food & More 2 Built in Speakers plays music via built in Aux cable, Taking Power from the Power Bank