I received it today and it's way cool. ABout the size of 4 AA batteries arranged in a square. Held together with screws and it has a rubber gasket for weatherproofness. It takes 2 AA batteries, and a push button on the back to control the modes.
The modes are: off, all on steady, all on blink, all on back-and-forth sequence. It has seven LED's. In a room with windows during the day and 4 lightbulb fixture on it throw a circle on on the opposite wall that's pretty bright. I haven't tested it at night yet, but as bright as it is, it's gonna be killer!
Anyway, I have to order another one for me to play with! it was $20 + $1 in tax from REI above, and shipping was free.
I haven't been this excited/impressed with and LED for a while. It's called and Eclipse or vistalite 700. Depending on who you talk to.