What is also very important to me: Even if you can hear soft music convinced the sound completely.
For battery life I can not say anything, but the 15 hours seem credible. On the iPhone, the battery status is displayed.
The comfort is also very pleasant. I have not taken it, the first two hours. Dennocht it is secure and safe.
I will complete this review as soon as I was able to gain more experience, for example with the battery.
03/28/2014
So one day is over and my review urgently needs to be revised yet. My initial enthusiasm was probably therefore primarily that I have long not heard music with a headphone. Unfortunately, I admitted this morning my Sony MDR-CD2000 out of the closet and hung it on the B & W MM-1. The difference is huge. The Sony one is "in space", hears fine echoes and overtones which swallows the Tracks Air almost completely. For the Tracks Air has a very different bass. One can perhaps best be described as if you listen to the music through a curtain at Tracks Air. To compare, I heard the new album of Malia, Cut the World by Anthony & The Johnsons and Bach in Havana of Tiempo Libre.
Some know it for sure: there are headphones and speakers that sound just pleasant and not stress one. One can describe the poor, but I think many of you know what I mean. The Tracks Air is definitely one for me to the playback devices that do not stress.