Review on 🔊 Waterproof Outdoor Bluetooth Shower Speaker - Onforu Portable Mini Wireless Speaker with Suction Cup, Sturdy Hook, Stereo Sound and Bluetooth 5.0 for Bathroom, Pool, Beach by Erin Leuenberger

I've had them for almost two years now and use them in the shower. I've only charged it 4 times in that time. I can't believe how long they last but I think the key is to let the battery drain before charging. My wife and I use this and I can't believe I've only charged it 4 times so far. Maybe 5, but no more than I can count on the fingers of one hand. Excellent purchase. The sound isn't great, but sometimes you have to take the front off to dry the water behind it, as that muffles the sound a bit, but other than that, no maintenance is required. I recommend buying this instead of some of the more expensive ones hanging in the shower.