The Floating Sound System from Paddle North 

This Bluetooth enabled floating sound system is waterproof, re-chargeable, and even floats! The 6-hour run-time, hands-free controls and carabiner clip allow for long paddle excursions while listening to your favorite tunes. It even supports micro-SD memory cards for off-the-grid enjoyment.

Features & Specs
- Size: 4" Diameter x 2" Thick
- Weight: .45 lbs
- 6-hours of battery life
- Includes USB-C to USB charging cable
- Waterproof
- Micro-SD enabled