✔️ Overall Outside Diameter: 3-1/8 inch (80 mm).This is the outside diameter of the round face desk clock insert. Mounting depth: 0.78 inch (20 mm). ✔️Fit round hole diameter(mounting diameter): 3inch (76 mm): This is the insert diameter of the opening that the clock fits in. You can use this arabic clock insert to make clock crafts. Quartz Movement Clock Insert has a rubber band gasket to securely hold the clock face in place. ✔️ Appearance: The insert clock features smooth surface and gold bezel with exquisite workmanship. The craft clock insert has black hour hand and minute hand,black second hand，and is designed with black arabic numerals marking on the white dial plate for easy reading. ✔️ High quality: This mini clock is your good choice to make crafts or use it as a nice gift. Perfect for home, kitchen, office,etc. ✔️ Compatible clock: Miniature clock fitup Insert replacement fits in many types of small glass & crystal clocks quartz movement. Great for crafts or replacing old clock faces. NOTE:BATTERY IS NOT INCLUDED (Requires 1 piece 1.5V AA Battery). Features: This mini clock movement insert fits in many popular glass and crystal clocks on the market. It is suitable as a component for clock crafting or repair. Specification:  Color:gold bezel, arabic numerals Clock overall diameter: 3-1/8 inch (80 mm) Mounting diameter: 3.0 inch/76 mm    Mounting depth:  0.78 inch (20mm) Kindly note: 1.The clock insert is suitable for applying at indoors only,not weather resistant. 2.Mini clock insert has a rubber band gasket to securely hold the clock face in place,which allows for slight irregularity in the hole. Package includes:  1 x Clock insert(1.5V AA Battery not included)