Dimensions: 10" x 10". Separate hand can be set to indicate Greenwich Mean Time or other time zone of your choice. Features a 12-hour as well as a 24-hour time scale. Injection molded case from high impact polystyrene. Snap in polystyrene lens. Made in Canada with a high quality American made Quartz Clock Movement. One "AA" battery required (High quality Alkaline battery recommended for best performance). One year manufacturers warranty.