Summary: I was looking for a replacement headset for my plantronics audio 90s, and these were the closest thing I could find. Big mistake. Please consider the Plantronics Gamecons instead of these, they are the new version of the Audio 90s.
Pros: They worked.
Cons: Cheap plastic, bad build quality, uncomfortable ear pieces that promote sweating, poor microphone.
Summary: Had this Item for 6 months and again sound vanished from left hand side of set. Bad design on all headsets and one day we can hope someone will make a set thats last the duration of the 12 months at least.