The 4-pack could be obtained by purchasing the Early Bird Certificate Package at Walmart - and then mailing away for the figures by filling out a form and including the package UPC and the original register receipt
The figure has a dome which makes a clicking sound once it's rotated
The sensor scope in the dome moves in and out of the droid when the dome is rotated
All three legs have little wheels in them
The middle leg can be removed so R2 can stand on two legs only
There are no hidden or removable panels on the droid
There is no packaging text available. The set was mailed out in a simple white mailer box.