Review on Sony MDR-ZX310AP ZX Series Blue Wired On Ear Headphones with Mic: Immersive Sound Experience by Quan Vn Chun  (C gng ᠌

The engineers at Sony did a commendable job coming up with something that is completely pointless. If you aren't used to playing music at its highest volume, you won't be able to use these headphones when you're outside, but when you're at home, it's best to listen to music with full-size monitor headphones. No, I'm serious about this. These are some advantages: 1) The outward presentation is acceptable. 2) The standard sound. A complement is in order for THESE headphones. Having this drawback: 1) The ear pads are not constructed out of fabric but rather a substance that is rubberized or something similar. Forget about listening to music while the temperature is high since your ears will start to sweat and it will be VERY uncomfortable. 2) An unsuccessful and unreliable concept for folding headphones, in which the earpiece can be removed from the groove and rotated in two planes simultaneously. The headphones break when they are dropped onto the couch from a height of 20 centimeters. Since that everything is constructed of plastic, this system won't withstand much force for more than a year before it fails (with very good luck). The headphones that my sister has are exactly the same, but they were released a year earlier. The design of those headphones is significantly more effective in this regard. Double strands of thin wire. Again, the headphones at the sister have a thick single cable, which is far more dependable than multiple thin wires. 3) The system for adjusting the length of the arms is flimsy, and everything is already loose. 4) Everything is already loose. 4) There is no attempt at all to muffle sound. Do not even entertain the thought that you will enjoy walking around and listening to music in public.