Stainless steel case with a black alligator leather strap. Fixed stainless steel bezel. Silver dial with silver-tone hands and stick hour markers. Minute markers around the outer rim. Dial Type: Analog. Three - date, month, day of the week / moonphase. day / night indicator. year display at the 8 o'clock position. Hand wind movement. Calibre 876-440 engine. Scratch resistant sapphire crystal. Skeleton case back. Case diameter: 40 mm. Case thickness: 12.1 mm. Round case shape. Deployment with push button release clasp. Water resistant at 50 meters / 165 feet. Functions: year, month, date, day, hour, minute, second. Additional Info: power reserve indicator on dial, day and night indicator on dial. Luxury watch style. Watch label: Swiss Made. Item Variations: Q1618420, 1618420, 161.84.20, Q161.84.20. Jaeger LeCoultre Master Eight Days Perpetual Calendar Stainless Steel Mens Watch Q1618420.