Stainless steel case and bracelet. Moon phase display with 12 hours timer at 6 o'clock. Second subdial with a 24 hour indicator at 9 o'clock. 30 minute timer with day and month display at 12 o'clock. Water Resistant up to 30m/100ft. The date is shown by a circle ring on the dial and indicated by the half-moon central hand. Longines Caliber 687, beats at 28'800 vph, & has an approximate power reserve of 54 hours. If the watch would ever need service, you would send the watch to us. The item "Longines Master Collection Automatic 40mm Blue Chrono Men's Watch new L26734926" is ...