Logitech H110 Stereo Headset Silver

I've had this head-set only about a week. It is working well, exactly as I expected and wanted. I bought the iPhone adapter (PC Headset to Smart phone Adapter Dual 3.5mm to 3.5mm) with it in case it was necessary. It wasn't. My 2009 Macbook Pro has dual mike/speaker ports that work with the dual leads on the head-set. However, the adapter allows attaching/detaching the headset by changing one cable instead of two, if that makes a difference far you. I haven't tried the headset adapter with my iPhone yet.The instructions that come with the headset are un-necessary because the set up is so obvious. With one limitation that makes them also irrelevant. They tell you that the two plugs are for mike and ear pads respectively. They tell you this with little icons, suggesting that the leads can be identified that way. They can't. The leads are differentiated by color, pink for the mike lead, green for the earphones. I could quickly identify them by trial and error. I also noticed that a P (for pink) is a bit like a mike, a knob on a stick, and a G (for green) looks like a pair of earphones.I would also like to add to this post a general comment about buying electronics online. It probably applies equally to other products but I haven't checked them. I needed a power cord for my Mac. I looked on Amazon. As I recall they were about $30 plus shipping. Reading the reviews I got the impression that most of the one star reviews reflected reports of units that failed. The failure rate seemed to be about 10%. So I thought, am I willing to take a 10% risk of failure on a $35 purchase. Well, I admit, I'm a bit of a tightwad, so I decided to see if I could lower my risk and went to look at the Apple Store. Here the price is up in the $60 range. I felt sure that this would be reflected in a lower failure rate. To my great surprise the failure rate at Apple is the same. So my conclusion is you lower your risk with the lower price and once in a while you have to buy a replacement.