Anker SoundCore Motion B IPX7 Bluetooth Speaker | $20 | Amazon
Anker’s SoundCore Motion B traded in its legendary predecessor’s 24 hour battery for a 12 hour battery, but it comes in at a lower price, and with improved IPX7 water resistance.
At just $20, you’re getting a speaker that’ll be loud enough to hear from across the pool thanks to dual drivers and 12W of audio power, and one that can fall into said pool without an issue.