I am writing this review after owning this speaker for 3 years now.
I've been using it since I purchased it in 2022, and it still works great.
I use it anytime I am outside, washing my car, or working at an event where we need music for the tent setup. The speaker is loud & the battery lasts a very long time, it has never died on me at any event or anytime when I have used it. I just charge it after every use so it always has a full battery & it's good to go all day.
If you are looking for a great Bluetooth speaker, this is it trust me, not to mention this thing is tough, however, it does say it's good for water, I have never used it in water. While it says it's made for it, I would really just use this speaker as a nice loud standalone Bluetooth speaker for dry areas, not in water, because anything will eventually die in water; water is just very corrosive and hard on things.

This is my second speaker
For the fact that links with my other rockbox
Only thing is the new one doesn't want to link with my old speaker my brother's rock box links butvthos one won't

The speaker worked great at first until it failed to float anymore and took on water now it doesn't work anymore.

Loved the speaker at first, enjoyed the house party capability. Last time it was used, it took on water (we verified that the cover for charging port was fully closed before putting into the water), to the point that it almost sank. Now, the speaker doesn't work anymore. Emailed customer service last week and haven't received a response at this time. Super disappointed, and we own several different Altec Lansing speakers.

Had my rock box 2 months and won’t come on now,tried different charge options, so what’s next??!