Needs serious balancing, comfortable fit, solid connection
In my experience these headphones play super unbalanced but with a little tweaking of the eq on my phone, OP7pro, they sound great. I've never had any connection issues and I use them almost every day, have never tried the mic so I can't comment on that. The fit of these headphones is honestly the best part for me, they're so small they don't stick out at all from your ears which is awesome way better looking than the others that hang out your ears. The case is heavy, solid metal looks super nice but is weird in a pants pocket. Have had a few charging issues but cleaning the contacts has always solved them.
Would recommend to a friend.