Silver-tone stainless steel case and bracelet. Fixed tachymeter scale black stainless steel bezel. Black dial with silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Chronograph - three sub-dials displaying: 12 hour, 30 minute and small second. Omega Calibre 1861 Hand Wind movement, containing 18 Jewels, composed of 234 parts, bitting at 21600 vph, and has a power reserve of approximately 48 hours. Scratch resistant hesalite crystal. Pull / push crown. Solid case back. Round case shape, case size: 42 mm. Fold over clasp with a safety release. Functions: chronograph, hour, minute, small second. Additional Info: special limited edition. Speedmaster Series. Casual watch style. Watch label: Swiss Made. Item Variations: 3577 50, 3577-50, 3577/50, 357750. Pre-owned Omega Speedmaster Chronograph Hand Wind Black Dial Mens Watch 3577.50.00.