Polished and satin-finished titanium case with a black structured lined rubber strap. Fixed polished and satin-finished black ceramic bezel. Skeleton dial with microblasted rhodium hands and index/ Arabic numeral hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Four sub-dials displaying - day, date, month, moon cycle. Automatic movement. Hub1270 unico engine. Scratch resistant sapphire crystal. Skeleton transparent exhibition see through case back. Case diameter: 45 mm. Round case shape. Deployment buckle clasp. Water resistant at 30 meters / 100 feet. Functions: month. day, date, minute, second, perpetual calendar. Luxury watch style. Watch label: Swiss Made. Hublot Big Bang Perpetual Calendar Skeleton Dial Automatic Mens Watch 406.NM.0170.RX.