Pyle PWR90DBL Aqua Blast Waterproof Bluetooth Floating Pool Speaker System with Built-In Rechargeable Battery and Wireless Music Streaming Built-in Bluetooth for Wireless Music Streaming Works with All Bluetooth Devices (iPhone, Android, Smartphone, iPad, Tablet, PC, etc.) Waterproof Marine Grade Construction: It Floats! - Built-in Rechargeable Battery (Includes Charging Cable) (4) Built-in Full Range Stereo Sound Speakers - Impressive Bass Response - Easy Push Button Controls LED Indicator Lights - Battery Life: 4 Hours (Charge Time: 8 Hours) - Dimensions (W x H): 7.5" x 6.7"