The Seiko Akarui alarm clock is a great addition to any bedroom or space where quietness is essential; colorful case and easy-to-read numerals The quiet sweep second hand continuously glides around the clock, eliminating annoying ticking sounds; perfect for any space requiring absolute quiet LumiBrite tipped hands for easy reading in the dark; LumiBrite glows in the dark hours longer than conventional luminous Equipped with quartz crystal movement making it the most accurate at time keeping Sized 3.39 X 4.29 X 2.52 inches; powered by 1 C battery (included); backed by a manufacturer's one year limited warranty