Silver-tone stainless steel case with a silver-tone stainless steel bracelet. Fixed tachymeter scale silver-tone stainless steel bezel. Black dial with silver-tone arrow-shaped hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. 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 crystal. Pull / push crown. Solid case back. Round case shape, case size: 38.6 mm. Band width: 19 mm. Deployment with push button release clasp. Water resistant at 60 meters / 200 feet. Functions: chronograph, tachymeter, hour, minute, second. Additional Info: trilogy set limited edition 557. Speedmaster Series. Luxury watch style. Watch label: Swiss Made. Omega Speedmaster Trilogy 1957 Chronograph Men's Watch 311.10.39.30.01.002.specs:Case Case Size:38.6 mmCase Material:Stainless SteelCase Shape:RoundCase Back:SolidBand Band Material:Stainless SteelBand Type:BraceletBand Color:Silver-toneBand Width:19 mmClasp:Deployment with Push Button ReleaseDial Dial Color:BlackType:AnalogCrystal:Hesalite CrystalHands:Silver-tone Arrow-shapedDial Markers:IndexSecond Markers:Minute Markers around the outer rimSub Dials:Three - 60 Second, 30 Minute and 12 HourLuminiscence:Hands and MarkersBezel:Fixed Tachymeter ScaleBezel Color:Silver-toneBezel Material:Stainless SteelCrown:Pull / PushInformation Brand:OmegaSeries:SpeedmasterCollection Name:SpeedmasterGender:MensModel:311.10.39.30.01.002Watch Label:Swiss MadeMovement:Hand WindEngine:Omega Calibre 1861Features Water Resistance:60 meters / 200 feetFunctions:Chronograph, Tachymeter, Hour, Minute, SecondWatch Features:Chronograph, Stainless Steel, AnalogAdditional Info Watch Style:LuxuryWarranty:4 Year Goldia WarrantyUPC Code:785449178113Additional Info:Trilogy Set Limited Edition 557Goldia Sku:OM31110393001002Department:WatchesCategory:Watches