Ancient Personal Shield

Production Description: Personal shield generator of Ancient design, found by Rodney McKay in a laboratory in Atlantis. Nicknamed "The Turtle Broach" by production, this item was introduced in Season One's "Hide and Seek," and was subsequently depleted in the same episode. It was also see in Season Three's episode "Irresponsible". An alternate Rodney "Rod" McKay used his reality's personal shield generator to survive a trip into our universe to warn us of the effects our experiments were causing in his reality.
Technical Description: Production made translucent green resin device with painted silver frame structure, light internally from LEDs turned on by a push button on top center, functionality is not verified, has two magnets on back. Measures approx. 3.25in x 2.25in x 1in. Comes with two Panasonic BR1225 3V lithium batteries in original packaging. Also comes with a 3.25in x 2in metal plate.