Summary: The above says it all. It didn't even work once so its probably best investing in more expensive ones. Apparently the person on the other end could hear a distorted version of my voice but I couldn't hear a single word they were saying.
Summary: Don't even bother. The sound quality through the 3.5mm jacks is terrible. I got it to use with voip, but gave up after minutes and ordered the USB version instead. (Logitech OEM PC 960 USB Stereo Headset) its a few ££ more but worth it if you want anybody to be able to hear you!
Summary: Although this was cheap I wasn't expecting it to break so soon. The problem was with the volume wheel on the cable, which sent crackled when turned and sent sound to only one ear in certain positions, and then broke altogether.