I bought two of these speakers. The sound is fantastic. The mode "transparency" allows you to listen to the sound and still know what is going on around you. It also isolate completely the sound if you wish. The only thing I didn't like is that the buttons do not have a clear indicating of what they are. The signals are there but you can't see them. For me, as I wear glasses, I have to look closely. I believe that time will help me memorize where they are and what they do, but for a first time user, you can't really see them. Nevertheless, they are great speakers and for a reasonable price compared to the high-end ones. They are worth it!
The headphones I purchased are absolutely awesome, the sound quality is exceptional and the ear pads are very comfortable. Sound core is the brand name and I will vouch for this quality item.
I bought these headphones nearly 2 years ago now. They have been absolutely consistent and reliable. i don't generally take very many calls with them, but when i do in a low volume area they are good at calls. In pure music/podcast capacity, they are awesome. I use them practically every day. i find them comfortable to wear for hours at a time. well worth my money.