They are the most comfortable earphones I have ever had. They attach firmly and use the full ear to support. I could wear them for hours without feeling sore. The two pieces of earphones are physically separated which is very convenient and comfortable when I want to use one ear for music/podcast and another for the surrounding.
The battery life is good and the case itself is a power bank. I usually put the earphones back in the case when I take a break from music. In this way, they could easily meet all my needs for the whole day without a power outlet. Very handy for long outdoor activities or traveling.