The non-removable battery life is an astounding 30 HOURS!

They take quite some time to charge-up, about 3 hours, but the battery life is excellent

The battery life is excellent

Battery life is quite good

I went with the on ear because the battery life is superior to the h9i.

The proximity sensor (to pause and play when you take off and put on the headphones, respectively) is a smart feature but sometimes doesn't work as reliably as it should

n’t understand this design flaw on what should be really great headphones.—————First off, I recommend you download the app (as they indicate) and use the instruction there since the instructions included in the box are pretty useless (unless you know what you are doing and if you do then you won’t care about instructions)

n’t understand this design flaw on what should be really great headphones.—————First off, I recommend you download the app (as they indicate) and use the instruction there since the instructions included in the box are pretty useless (unless you know what you are doing and if you do then you won’t care about instructions)

Features & etc:I’m still trying things out—like the transparancy and the noise cancellation