Size: the quartz clock insert overall diameter is 110 mm (4.3 inch); Suitable mounting diameter is 94 mm (3.7 inch); Mounting depth is 21 mm (0.8 inch), please check the size carefully before purchasing, Metal mounting clips: quality of quartz clock fits up movement, comes with attached metal mounting clips, Clear cover with gold border: the gold plastic rim with quartz movement is good for DIY crafts or replacing old clock faces; And the clear cover allows for easily reading the time, Wide applications: the quartz clock insert features a gold colored trim, clear plastic lens, and black roman numerals make it fit for crafts or replacing old clock faces, Needed power: just need 1 of 1.5 V AA battery (not included) can run a long time