great sound quality good noise cancellationhigh bass especially in max volume i cant listen to it in max volume for too long low sound leakage only problem is that it is not comfortable i can listen 2230 hour max maybe because i had a on the headphone thats why this one is a little uncomfortable for me i recommend you to buy it if you do not intend to wear it 45 hrs in one sit otherwise try rockerz 600on the ear they are really comfortable for me battery backup for both headph