Using this for more than one year now. Good for indoor use or even outside in a small group.
Sound: Clarity is fine, quality bass depending on the source of music. I found difference in max volume between bluetooth and AUX mode.
Battery: I'm not a very heavy user, around 0.5-1 hours daily, and this easily lasts for about a week on full charge.
Ease of use: It's a bit large for sure, but that can be ignored for above two qualities in given price range. Can be hung on a wall in bluetooth mode, but since the Power on/off button,AUX and charging port are all BEHIND the speaker you'll have to take it down quite often. They could have put all the ports and switch on the left side just like the control buttons on right side.