ZachLKZ ZS5 Wireless Bluetooth 4.2 Upgrade Cable HIFI Earphone 0.78mm 2Pin Cable Dedicated For KZ ZS ZS3 ZST ED12 Original Parts
http://s.aliexpress.com/yYvMNZnq
Update: So i just got the bluetooth module today, although i would've had it yesterday but the srupid usps gave it to my neighbor that lives 5 houses down.
But for the product itself:
It works with the headphones
Doesn't sound terrible although, its a little muddy, and not as clear as my lgV20 .
But functionality wise this is what I needed.
If you want to have them Bluetooth you're going to sacrifice a little quality.
Though I think the pins are 75mm because they are like half the length of the 78mm pins on the cable that came with the headphones. But the bluetooth pins go in and stay in, doesn't seem like they'd fall out.
Be careful not to lose the micro usb charging cover on the unit itself. Because it's not connected to the unit, its an insert.
I also believe it has a built in microphone, haven't been avle to test that yet.
Comes with a quality micro usb charging cable also so im happy.
If you order it will probably take around 20 days, but don't count on that.