NAXA Electronics NAS-3078 Waterproof Bluetooth Shower Speaker A waterproof wireless speaker & speakerphone that you can use in the shower or bathroom Built-in suction cup designed for mounting to tile, glass, or other smooth surfaces Rechargeable lithium battery lets you enjoy music anywhere you go Stream music wirelessly and take calls from your smartphone Easy to use buttons for remote control of your connected Bluetoothdevice; Power: Rechargeable battery, USB charge