Stainless steel case with a brown (calfskin) leather strap. Fixed stainless steel bezel. Black dial with luminous yellow gold-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands. Caliber AL-520 automatic movement with a 38-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape. Case size: 42 mm. Case thickness: 12.3 mm. Band width: 20 mm. Tang clasp. Water resistant at 300 meters / 1000 feet. Functions: hour, minute, second. Seastrong Diver 3000 Series. Dive watch style. Watch label: Swiss Made. Alpina Seastrong Diver 3000 Automatic Black Dial Men's Watch AL-520BY4H6.specs:Case Case Size:42 mmCase Thickness:12.3 mmCase Material:Stainless SteelCase Shape:RoundCase Back:SolidBand Band Material:(Calfskin) LeatherBand Type:StrapBand Color:BrownBand Width:20 mmClasp:TangDial Dial Color:BlackType:AnalogCrystal:Scratch Resistant SapphireHands:Luminous Yellow Gold-toneDial Markers:IndexSecond Markers:Minute Markers around the outer rimLuminiscence:HandsBezel:FixedBezel Color:Silver-toneBezel Material:Stainless SteelCrown:Screw DownInformation Brand:AlpinaSeries:Seastrong Diver 3000Collection Name:Seastrong Diver 3000Gender:MensModel:AL-520BY4H6Watch Label:Swiss MadeMovement:AutomaticEngine:Caliber AL-520Power Reserve:38 HoursFeatures Water Resistance:300 meters / 1000 feetFunctions:Hour, Minute, SecondWatch Features:Stainless Steel, Leather, Gold, AnalogAdditional Info Watch Style:DiveWarranty:2 Year Goldia WarrantyUPC Code:7630428448646Goldia Sku:AL520BY4H6Department:WatchesCategory:Watches