The Citizen Calibre 3100 is a work of genius like no other. The Calibre 3100 features a perpetual calendar, twin date display and 180 day power reserve. Gold-tone stainless steel case and bracelet. Black dial. Date displays at 12 o'clock position. Bezel set with 42 diamonds. Perpetual calendar. 12/24 hour timekeeping. Mineral crystal. Push button deployment clasp. Case diameter 43.5mm. Case thickness 12mm. Eco-drive movement. Water resistant at 100 meters (330 feet). Citizen Calibre 3100 Men's Watch BT0032-51Especs:General Color:Black / GoldCase Case Size:43.5 mmCase Thickness:12 mmCase Material:Stainless SteelCase Shape:RoundBand Band Material:Stainless SteelBand Type:BraceletBand Color:Gold-toneClasp:Deployment with Push Button ReleaseDial Dial Color:BlackType:AnalogCrystal:Scratch Resistant MineralBezel:42 DiamondsInformation Brand:CitizenSeries:Calibre 3100Collection Name:Calibre 3100Gender:MensModel:BT0032-51EWatch Label:Made in JapanMovement:Eco-DriveFeatures Water Resistance:100 meters / 330 feetFunctions:Date, Calendar, Day, Power Reserve, Perpetual Calendar, HourWatch Features:Diamond, Stainless Steel, Gold, Perpetual, AnalogAdditional Info Watch Style:DressWarranty:5 Year Goldia WarrantyUPC Code:0013205082337Additional Info:Date Displays At 12 O'clock Position; 12/24 Hour Timekeeping; Perpetual CalendarGoldia Sku:CZBT0032-51EItem Variation:BT0032 51E, BT0032.51E, BT003251EDepartment:WatchesCategory:Watches