The Seiko Wall Clock is versatile and has a simple design that easily blends into any style of décor. This clock features a sturdy black metallic case, quartz movement and a quiet sweep second hand. The numerals and hands are luminous in the night. Powered by 1 AA battery (included). Overall dimensions: 11 X 11X 1.5 inches. All Seiko clocks are equipped with quartz movement making it the most accurate at time keeping.