Uses 1 AA battery (not included) . Designed by George Nelson . High-grade quartz movement . Keeps accurate time . Retro atomic style . Colorful wall decor . George Nelson logo on the center board at 12 o" clock position . 2 in. D x 13 in. W x 13 in. H (1 lb) This is a retro 50"s style Atomic ball wall clock. All in metal and wood. Features a round clock center core with silver rods and colorful balls as each hour on the top. Matching straight hands. Each of the twelve balls is painted a unique color. Works on AA battery (not included), 13 in. diameter.