This Portable Bluetooth Speaker, Soundcore Motion B by Anker, 12W IPX7 Waterproof  , Bluetooth 4.2 Speaker is just $19.99 !! 

• Upgraded edition: our original SoundCore Bluetooth speaker with bigger sound and stronger protection.
• Turn it up: Dual full-range drivers and an oversized bass radiator drop a huge 12W of stereo sound.
• Pool party proof: ipx7-rated casing offers impermeable protection, even during complete submersion.