Clock insert size: overall diameter: 2-1/8 inch (55 mm); Mounting depth: 1/4 inch (6 mm); Fit round hole diameter: 1.97 inch (50 mm), please check the size before purchase
Appearance: roman numerals on white face, zinc-alloy metal case, clear glass lens, gold colored zinc-alloy metal bezel
Rubber gasket: the package comes with a rubber gasket to securely hold the insert in place
Battery: battery Japanese PC 21 is included and installed, and the plastic clip allows for locking out battery until you set the time and engage the battery; And the battery has 2 years of life time
Wide application: fits in many popular glass and craft clocks, good for making craft projects