These look like normally ebay tat to me!

I would guess they are simply halogens with a bit of blue tint added

If you want to upgrade your H7s go for the Osram or Philips silverstar or something like that. Check out autocar online for comparison.

I think the smart money is one the previous poster and going for a HID conversion upgrade kit. These fit into the standard units and need a bit of adapting, but you get the full on HID light output for your effort