This is a 39mm. OMEGA SPEEDMASTER Triple Date Chronograph from the 1990’s having the automatic winding (recently cleaned) caliber 1151 complication movement featuring the Day, Date, Month, 24 hour, along with 30 minute and 12 hour chronograph functions all working perfectly. The crystal is sapphire. The steel case is in fantastic overall shape. Notice the great looking white dial. Only $1995.