Amazon has the AmazonBasics Shockproof and Waterproof Bluetooth Wireless Speaker
Marked down to $11.10 was $34.99
Bluetooth wireless speaker with shockproof, waterproof, and dustproof design (rated IP 67); doubles as a shower speaker
Advanced Bluetooth 4.0 technology for crystal-clear sound; pairs instantly with your Bluetooth-enabled device
Rubberized rugged exterior provides ultimate impact resistance; rigid construction and treated aluminum grill for enhanced strength; carabiner included
Adjust volume or switch tracks using control buttons on the portable speaker (or from paired device)
33-foot wireless range; up to 8 hours of uninterrupted playtime with a single charge; lithium ion rechargeable battery included