Bulova Lunar Pilot Wall Clock C1971Lunar Pilot watch, this slim line matte silver case has a glass lens protecting the metal debossed dial with a temperature , hygrometer and sub dial step second's gauge. The silent sweep seconds hand (no ticking ) smoothly measures the passing time. Both the hour markers time hands have luminescent ink to reflect in low light. The accurate quartz movement and sub dial seconds movement each use 1 AA battery ( not included).