White platinum case and bracelet, fixed white platinum bezel, blue dial with Roman numeral hour markers and applied index markers, moon phase display at 9 o'clock position, perpetual calendar displaying month/leap year/month/date/day of week, sapphire crystal glass with exhibition for movement, octagonal shape automatic mechanical movement Cal. 5134 (derived from Cal. 2120), case size 41mm thickness 9.5mm, fold over clasp with safety catch, water resistant to 66 feet/20 meters.