Stainless steel case with a stainless steel rolex oyster bracelet. Fixed domed stainless steel bezel. Black dial with silver-tone hands and index hour markers. Arabic numerals mark the 3, 6 and 9 o'clock position. Minute markers around the outer rim. Dial Type: Analog. Automatic movement with a 48-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case size: 31 mm. Round case shape. Oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: hour, minute, second. Luxury watch style. Watch label: Swiss Made. Item Variations: 177200, 177200-BKSO, Rolex-177200, Rolex-177200-BKSO. Rolex Oyster Perpetual 31 mm Black Dial Stainless Steel Rolex Oyster Automatic Unisex Watch 177200BKASO.specs:General Color:BlackCase Case Size:31 mmCase Material:Stainless SteelCase Shape:RoundCase Back:SolidBand Band Material:Stainless Steel Rolex OysterBand Type:BraceletBand Color:Silver-toneClasp:OysterlockDial Dial Color:BlackType:AnalogCrystal:Scratch Resistant SapphireHands:Silver-toneDial Markers:IndexSecond Markers:Arabic Numerals mark the 3, 6 and 9 o'clock position. Minute Markers around the outer rimBezel:Fixed DomedBezel Color:Silver-toneBezel Material:Stainless SteelCrown:Screw DownInformation Brand:RolexSeries:Oyster PerpetualCollection Name:Oyster PerpetualGender:UnisexModel:177200BKSOWatch Label:Swiss MadeMovement:AutomaticEngine:Rolex Calibre 2231Power Reserve:48 hoursFeatures Water Resistance:100 meters / 330 feetFunctions:Hour, Minute, Second, ChronometerWatch Features:Stainless Steel, Perpetual, Chronometer, AnalogAdditional Info Watch Style:LuxuryWarranty:2 Year Goldia WarrantyUPC Code:845960084079Goldia Sku:RLX177200BKASOItem Variation:177200, 177200-BKSO, Rolex-177200, Rolex-177200-BKSODepartment:WatchesCategory:Watches