A:AnswerYes, my daughters take theirs in the shower with them. They also take it to the pool. It has been submerged and sprinkled on and still works fine.
A:AnswerThe battery has lasted me about 4-6 hours at full volume. It's not a big speaker but we have used it at the pool and backyard parties with no complaints. I would say probably about twenty to thirty feet. Dynamic sound from a small package.
A:AnswerFor the mid-sized water, resistant products the sound is great, with great bass. A full sized unit may be better but would be much less portable. This could easily be hidden in a locker.
A:AnswerYes, definitely. I just Bluetooth my UE Wonderboom to the Dot in my kitchen and the sound is so much better than the more expensive mini Bluetooth speaker I had in there before. The sound is louder and clearer...just what I wanted. You won't be disappointed.
A:AnswerIt charges with the same connections most phones use. So, if you have a car charger, it should work fine.
It is compact, around 4"x 2"x1". This is approximate.
A:AnswerIf you hold down the power button until after the unit turns on and beeps, until the light alternates between blue and red, it might come up in your new device.