Not sure if these were the first NC headphones or earbuds on the market but they were the first I ever saw. I found them great, comfortable fit for me, although they were large and worked really well. The chrome loops did look a bit like earrings, I painted mine black. Great on planes and even pretty good in machinery spaces, the ambient over-ride button worked really well. I was very upset when I lost them, as they were no longer available and the latter models were nowhere near as good audibly, even I noticed. If anybody is sufficiently interested to have the original document, send me a PM. File too big, so English version only (Spanish was the second).