Apparently you will need a special watch winder for these Seiko Kinetics, not the traditional watch winder used for mechanical watches.
http://www.princetonwatches.com/shop/YT02A-A.asp
Worth the cost? I don't think so. I have a dual watch winder for my auto watches but it was under $50 and that's about how much I'm willing to spend on one. It's crazy to see watch winders cost hundreds (and maybe even thousands) of dollars, I'd rather get another watch instead. But then again, it's crazy to pay what we sometimes pay for shaving gear too
The teacher becomes the student. Thanks for the info, I didn't count on the higher resistance the rotor in a kinetic encounters making a normal winder inefficient at best.
I did some reading and apparently a braun toothbrush charger works, but less efficiently then the real thing.
Oh, and I love the Sinns.