1、Wiring diagram: PIN 1,Tip- Left audio; PIN 2,Ring- Right Audio; PIN 3,Ring-Ground; PIN 4,Sleeve-Microphone. This wiring is called CTIA/AHJ wiring and used in products from Apple, HTC, latest Nokia, latest Samsung, Jolla, Sony (Dualshock 4), Microsoft (including Surface, Lumia, and XboxOne controller with chat adapter) and most Android phones.<br>2、There is also old OMTP wiring standard calls for Tip to be used for left audio, Ring 1 to be used for right audio, ring 2 to be used for microphone, and the sleeve to be used for ground. this older OMTP standard is found in old Nokia (and also Lumia starting from the 2nd generation), old Samsung (2012 Chromebooks), old Sony Ericsson (2010 and 2011 Xperias), Sony (PlayStation Vita) and the OnePlus One. Please check your wiring before start your DIY project<br>3、Easy to handle,you really don't have to be a professional to do this. Just insert the cables in the hoops, twist and lock in place, and only then solder.<br>4、Suitable for the cable up to 5mm, if your cable is too thin, just use some sleeve to hold it properly to avoid the movement<br>5、Package include: 4 Pack connector + Some shrinkle tubing