Omega has made many interesting looking remotes and markets them under a variety of brands. One such keyfob is part 124-13, used on Excalibur Gold systems. This remote has 3 buttons and FCC ID L2MAL41T on the back of the case. The circuit board in it is identical to Omega part 124-23 and 124-33, which are interchangeable remotes with different case colors.
See Omega remote part number 124-13 at this link.
As with all aftermarket alarm systems, this remote is user programmable via the valet button in the vehicle.