Doctor Who TARDIS Bottle Opener with Sound FX Effects Doctor Who bottle opener inspired by The TARDIS as seen on the show, perfect for the ultimate fan! Use it for opening soda, beer, and other beverage bottles TARDIS sound effects will be played every time the bottle opener opens a metal cap Gadget dimensions are approximately 2 x 2 x 3.5 inches Requires 3 x 1.5V LR41 sized batteries (included). Not intended for use by children.