Bluetooth Speaker,Gaosa Surround Sound Cube Portable Wireless Bluetooth Speaker The water cube delivers powerful sound. It"s easy to enjoy soaring highs and deep booming bass, wireless and cord-free. Totally light and Portable, the carry case comes with a handy carabiner to attach it easily to your backpack. Bluetooth and internal microphone makes talking on the phone easy and clear. Reverse Charging Of Mobile Devices Via USB-A Port. Change Tracks from your phone. Or your laptop or any other Bluetooth-enabled device from up to 31 feet away. Pairing is easy tap your phone to your Beats water cube and create an instant connection. Improved user interface, New features include the ability to amplify or stereo your music and accessory charging.