Precision built mini-quartz movements, accurate to within 10 seconds per month, are the ideal choice in wood, ceramic, or any material where minimum depth is required. Runs over 1 year on a single "AA" battery (not included). Includes removable hanger, rear time set and on/off switch and all necessary mounting hardware. Sweep seconds are available at a slight extra charge. 2-1/8" x 2-1/8" x 5/8" deep, and will fit neatly into a 3" diameter hole. Ordering Note: Choose the type of hands you want and the quantity of movements for those hands before adding this item to your cart.