The waterproof flap can easily become compromised with sand - ensure the groove is dirt/sand free and really check that the flap is seated properly to ensure water resistance as my friend discovered the hard way

Have not floated this yet, so can't speak to the water resistance factor

Built in bungee to tie it to just about anything, (backpacks, bikes, etc) and an included inflatable floatie for the pool, (yep, good enough water resistance to hold underwater and not come out worse for wear).-Battery life.

Works great and the water resistance works fine in the bathroom shower, have not tried it anywhere else yet!

I have a BOSE bluetooth speaker as well and this sound is noticeably superior (and the BOSE is really good).I've used this in the rain and in the pool as well as on dry

I use them on my golf cart as well as when working outdoors need to get two of them for balanced sound when you need sound in a large area.

I have had my iPhone rooms away from my speaker and the music played as clear as if the two devices were right next to each other

So, I will be using this at my desk as well as on our boat.

I have a BOSE bluetooth speaker as well and this sound is noticeably superior (and the BOSE is really good).I've used this in the rain and in the pool as well as on dry

I use them on my golf cart as well as when working outdoors need to get two of them for balanced sound when you need sound in a large area.

I have had my iPhone rooms away from my speaker and the music played as clear as if the two devices were right next to each other

So, I will be using this at my desk as well as on our boat.