Stainless steel case with a stainless steel bracelet. Fixed stainless steel bezel. Black dial with silver-tone hands and Roman numeral hour markers. Minute markers around the outer rim. Dial Type: Analog. Date display at the 3 o'clock position. Automatic movement with a 42-hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Transparent case back. Case size: 40 mm. Round case shape. Deployment clasp with a push button release. Water resistant at 30 meters / 100 feet. Functions: date, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Item Variations: L2 648 4 51 6, L2-648-4-51-6, L2/648/4/51/6, L26484516. Longines Master Big Date Black Dial Automatic Men's Watch L2.648.4.51.6.