The Xiaomi Piston line of headphones has enjoyed a lot of success, particularly because of their high build quality, great sound and extremely competitive pricing. Xiaomi has just released their third iteration of the headphones, the Xiaomi Piston 3.0, and they've continued to impress.
Starting off with the gold plated 3.5mm headphone jack, we move through to a metal headphone jack cover. The cover has (essentially invisible) laser etchings going around it, as well as a contoured design, making it easier to grip when you want to unplug the headphones. The cable from that point on is threaded in finely braided kevlar which continues through to the point where the individual earphone cables diverge. At this point we meet a metal cable cover over the Y-divider with the same metal design as the headphone jack cover.
The cables for the individual headphones are sleeved through silicon from this point, except for the remote which you come across on the right headphone (with the same metal covering mentioned earlier). The angled in-ear earphones have a metal back with a plastic body, in contrast with the earlier Piston generation that had a full aluminum body. The previous Piston had beryllium-alloy drivers, but in this iteration they've been replaced with titanium ones.