eBay

Dimension: the overall diameter of the clock insert is 2.8 inch (70 mm) that refers to the front face outside maximum diameter including the colored bezel
Features: the quartz clock insert features a gold colored trim, clear plastic lens, and black roman numerals on white dial for easy reading
Mounting diameter: fit round hole diameter: 2.4 inch (61 mm); Mounting depth: 0.7 inch (17 mm); Great for crafts or replacing old clock faces
Rubber band mounting system: complete with rubber band gasket to securely hold the insert in place, which allow for slight irregularity in the hole
Power: require 1 piece AAA battery (not included); Warm note: clock is intended for indoor use only, not weather resistant

2.8 Inch (70 mm) roman numeral quartz clock insert with gold trim
Round clock insert replacement:
The clock mechanism insert features a gold plastic rim, clear plastic lens, and black roman numerals on white dial, which is easy to read; Great for craft projects and replacing mini clock faces.
Warm note:
1. The quartz clock insert requires 1 piece AAA battery, that not included.
2. The clock insert replacement is intended for indoor use only, not weather resistant.
Dimensions:
Overall diameter: 2.8 inch (70 mm)
Mounting depth: 0.7 inch (17 mm)
Fit round hole diameter (mounting diameter): 2.4 inch (61 mm)
Package included:
1 x Clock insert