Why this clock mechanism Quick, reliable way to build or a clock: brand quartz insert tailored for DIY projects or to a broken movement. Silent operation for undisturbed rooms: precision quartz movement runs quietly so it won't interrupt sleep, meetings, or quiet spaces. Attractive, readytouse finish: goldtrimmed face and clear lens give a finished, professional look without extra parts. Key features at a glance Sizes available: 65mm, 80mm, 90mm, 105mm, 110mm overall diameters. Choose the size that fits your clock opening; mounting details are shown in product images for verification. Power: 65mm size uses a single AAA battery; 80mm, 90mm, 105mm and 110mm sizes use a single AA battery. Movement type: quartz mechanism for accurate timekeeping and dependable performance. Display: Arabic numeral dial with clear lens and gold trim for easy reading and broad décor compatibility. Finish and build: gold finish around the face to match classic and modern styles. Practical benefits Saves time and cost compared with buying a whole clock: only the movement and face to restore a cherished clock. Versatile fit: multiple diameters and clear mounting specs let you confirm compatibility before . Quiet reliability: ideal where silence matters — bedrooms, offices, libraries. Typical use scenarios Restore a family heirloom wall clock by swapping the old movement with a quartz insert in the correct diameter. Build a custom clock from wood, metal or craft materials — choose the size that matches your clock opening and install the goldtrimmed face for a clean finish. a noisy clock movement in a bedroom, study, or waiting room with a silent quartz insert to eliminate ticking. Choosing the right unit Measure the existing clock opening or the finished aperture and compare it to the overall diameter options (65mm, 80mm, 90mm, 105mm, 110mm). Check the product images for exact mounting dimensions before ordering. Select 65mm if you prefer AAA power; select 80mm, 90mm, 105mm, or 110mm if you want AA power. What you'll get Brand quartz clock insert in your chosen diameter, gold finish, Arabic numeral dial, clear lens, and a silent movement that runs on a single AA or AAA battery as specified. No extra parts are included beyond the clock insert; please verify mounting dimensions in the product images to ensure a proper fit.