Premium Gold Roman Insert 2" measures 2" 50.8mm in outside diameter. This clock insert is a Premium Fit up movement with a gold plated bezel, white dial and black Roman numerals. This premium alloy bezel inserts use a Seiko PC21 watch movement and is supplied with a battery installed. The case is supplied with a gasket to hold the bezel into the hole. It a crystal glass lens, stainless steel back cover and alloy bezel. The outside diameter of the bezel is 50.8 mm (2"), fits into a hole 46.0 mm (1-13/16") and has a total depth 9.5 mm (3/8"). When installing, remove the white plastic clip underneath the crown.