This popped up in one of those paid ad squares on home.woot! It was listed 2 YEARS AGO by @catbertthegreat: for SAME PRICE...so this is probably a TATTLE! But it was just too flippin' cool to keep buried under two years of deals, so I'm a postin' it along with a link to the original post!
Kinekt Design Mechanical Gear Ring for $165
Sizes 9, 10, 11, and 12 are available.
This is just awesome and I'm seriously tempted to buy it, but they do not have my size(8) in stock and the band looks pretty thick which does not look good against my really small fingers.
"The Gear Ring is made from high quality matte stainless steel. It features six micro-precision gears that turn in unison when the outer rims are spun (as can be seen in the video).