Here is a floating Bluetooth speaker that combines lights and sound to make your pool parties more fun. The Blufree Floating Pool Speaker can be immersed to 3 feet for 30 minutes. It has color changing lights with 7 themes and lasts up to 8 hours on battery.
This speaker also has a microphone built-in, so you can take a call while swimming or taking a shower. It has connectivity range of up to 15 meters.