Features: Diameter: 80mm; Mounting Diameter:73mm; Installation Depth: 20mm. it good for DIY craft, replacing old clock face, please check size before purchase; The clearly cover allows for readings time easily Battery is not included (requires 1x1.5V AA battery). White with black easily read numeral; perfect size for, kitchen, offices Home; Specifications: Material:ABS Frame Diameter:Approx.80mm/3.15in; Mounting Diameter:Approx.73mm/2.87in; Installation Depth:Approx.20mm/0.79in. Option Type:Arabic Numeral Clock Insert with Gold Trim,Arabic Numeral Clock Insert with Silver Trim,Roman Numeral Clock Insert with Gold Trim,Roman Numeral Clock Insert with Silver Trim,Roman2 Numeral Clock Insert with Gold Trim,Clock Insert4,Clock Insert5,Clock Insert6; Package Includes: 1pc Clock Insert note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.