17-jewel Cal.1045 movement black dial with luminous baton indexes inner Arabic five minutes outer minute/fifth second scale subsidiary dials for running seconds and 12 hour recording 24 hours with night/day indication by means of an arrow on a revolving disc 60 minute recording by means of a jet hand apertures for the day and date white baton hands polished and brushed case the bezel marked Gradue Pour 15 Pulsations screw down case back fitted stainless steel Omega bracelet case dial and movement signed 41mm.