Feature 1CLEAR DIGIT SCALE RING: Delicate color, overall looks exquisite, make watch dial more beautiful. With luminous beads, iluminate in the dark and assists you in using it in a dark environment. 2REPLACEMENT PARTS: Watch bezel insert is a wonderful replacement part for the old or broken one, important accessory for watchmakers and watch repairers. 3SIMPLE OPERATION: Bezel ring prevents daily scratches and provides extra protection. Easy to replace, just pick up your watch and place it on top, the adhesive on the ring allows easy attachment. 4PORTABLE DESIGN: Light weight and in small size, easy to store and carry, can be easily put into your bag, perfect for home and professional watch store. 5CERAMIC MATERIAL: Bezel insert is made of high hardness ceramic materials, safe and eco friendly, wear resistant, scratch resistant, firm and sturdy, durable.SpecificationItem Type: Watch Bezel InsertMaterial: CeramicSize:Outer Ring: Approx. 40mm / 1.6inInner Ring: Approx. 31.8mm / 1.3in Package List1 x Watch Bezel InsertNotePlease allow slight error due to manual measurement. Thanks for your understanding.