Try the ultimate ears mega boom speaker. We got one as a gift and it’s amazing for around the pool, and splash proof. You can’t throw it in the pool, but anything short of that and you’re good. It’s rechargeable which makes it handy with a nice long battery life. My wife and I hang ours on a Shepard’s hook by the spa and connect to our phones. At only ~$150 it’s decently priced too.
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17.7k gal, 98 ft perimeter, IG quartz, 3HP EcoStar VSP, 1.5HP TriStar Dual Speed, 725 sq ft SwimClear Cartridge, Rainbow chlorinator, Paramount clear O3, Pro Logic controller, 500k BTU heater, AquaVac 500, Spillover Spa, 3 sheer waterfalls, 3 bubblers.