It is a rare thing to see a knockoff Seiko, but your link has me wondering. Usually knockoff manufacturers will go for big dollar brands like Omega or Rolex.
After checking out the link I'm a bit suspicious. The crown position on some of those "Automatic Divers" is wrong, and to my knowledge Seiko doesn't fit glass backs to their auto Divers from the factory. Some of those watches are styles that I've never seen before, either. The lack of box and documentation is a red flag as well. None of this is conclusive, as these could be Japan only models which could possibly explain the differences.
I have never seen a Knockoff Kinetic, because the movement is proprietary to Seiko. If you have a quartz watch, and can feel a swinging rotor (or even better take the back off and look at the movement) then I'm almost positive that it's the real deal.
If you are looking for a Kinetic you have to be careful with grey market products. A while back a bunch of them got out of the factory with bad capacitors that will fail after a short time and these frequently turn up on the grey market.
A known genuine Kinetic purchased from a reputable dealer will hold up very well in my experience, but I'm more inclined to go with Citizen's Eco-Drive if you want a no-battery quartz. The Kineitc system requires a spinning rotor to generate power, and moving parts of this nature are vulnerable to a whole host of problems caused by shock, wear, and vibration. It is rare to see a Kinetic rotor assembly failure, but it does happen. The Eco-Drive is simply a solar cell which should last essentially forever.
I'd recommend not trying to cut corners to save a few bucks and get it from a genuine dealer. A nice watch is a great thing to have if you get one that you like, and knowing that it is real and covered by a good warranty is IMO worth the additional cost.
