[bluebronco]

The Kreis90.
It looks decent. There is also a YouTube video showing it in action.
I contacted them regarding price. Here the the email I got back:

Selling price is $225 USD.
EMS (I think is the battery pack) is separate additional shipping charges are $35 USD.

* Set Includes : Kreis90, Charger, Pouch, Two Step up Ring (by choice)
* Step up ring choice 2per : (49mm,52mm,55mm,58mm,62mm,67mm,72mm,82m) - And do not need 77mm rings. Because, Kreis90 basic mount is 77mm.

* Optional: SM-74 Screw mount ring @ $20
Tripod mount ring with Velcro tape @ $20
Additional step up ring @ $5 each (49mm,52mm,55mm,58mm,62mm,67mm,72mm,82m)



DSLR LED RING LIGHT KREIS90

[Doanh]

Pretty good build but quite pricey since you can get the Promaster or Vivitar ring flash for less.