Feature 1[Durable and Waterproof]: The floating dry bag is made with flexible and durable 500D PVC material, featuring a sturdy roll top closure for a secure and watertight tape, keeping your valuable items from water, sand, and mud. 2[Charge Your Phone]: The dry bag can also charge your phone when fully charged, simply connect your phone to the built in Bluetooth speaker and enjoy your favorite music while charging your phone. 3[Easy Operation]: The waterproof dry bag backpack is easy to use, simply drop your gear into it, grab the braided tape at the top, wind it tightly down 35 times, and secure it with a clasp to complete the sealing. 4[Wide Application]: The roll top dry bag is suitable for all outdoor activities, travel, hiking, camping, and even as an illuminated Bluetooth speaker, can light up your party with the music activated LED lights. 5[Convenient Charging Options]: The waterproof dry bag can be charged in direct sunlight via the solar panel, or via a mobile charging device via the micro USB port.Item Type: Waterproof Speaker Dry BagMaterial: 500D PVC, ABSBattery Type: Polymer Lithium BatteryBattery Capacity: 2000mAh (shipped with built in battery)Solar Charging Time: 20-24 Hours in strong direct sunlightUSB Charging Time: 2 Hours .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x USB Output Cable1 x USB Charging Cable1 x Waterproof Bag1 x User Manual2 x Straps