Easy Installation & Firm Attachment: Simple setup requires 86mm ( 3.4 Inch) diameter opening with 17mm depth Three included metal clips keep the clock head firmly in place without adhesives, allowing easy battery replacement when needed Traditional Styling: Showcases golden circular frame with clear black Roman numerals for effortless reading The traditional inset design complements various clock bases including wood, ceramic, stone, or glass surfaces Consistent Movement Technology: Features dependable timekeeping mechanism for accurate display The quiet function ensures peaceful environments, perfect for areas like bedrooms, studies, or workspaces requiring Sturdy Metal Construction: Crafted with robust metal frame, face, and hands for enduring strength and elegant appearance The protective layer helps maintain the finish, ideal for creative projects or clock enhancements with a sophisticated touch Battery Specification: Runs on single AA battery ( not included per regulations) For extended usage, standard 1.5V carbon batteries are suggested with this clock movement