Hublot Big Bang Mens Watch 301.SB.1384RX (variations: 301.SB.131.RX, 301-SB-131-RX, etc.). Steel case with lateral black Kevlar inserts and a black rubber strap. Fixed black ceramic bezel. Black carbon fiber pattern dial featuring luminous skeleton hands and Arabic numeral/index hour markers. Minute markers on the outer rim. Analog Dial Type. Luminescent hands and markers for night readability. Date display at 4-5 o'clock position. Chronograph functions with three sub-dials: 60-second, 30-minute, and 12-hour timer. Automatic Hublot calibre HUB4100 movement (based on ETA 2894-2), comprising 27 jewels and 252 parts, operating at 28800 vph with a ~42 hour power reserve. Scratch-resistant sapphire crystal glass. Pull/push crown for winding/adjusting time. Transparent case back showing the movement. Round shape. Case diameter: approximately 44 mm. Case thickness: about 14.5 mm. Strap/band width: 25 mm. Approximate band length: 8 inches (suitable for wrist reference). Fold-over clasp with push button release mechanism. Water resistant to 100 meters / 330 feet (~300 meters is typical, this might be a specific variant detail or error). Functions include chronograph, date, hour, minute, and second display. Sport watch style design. Swiss Made label on the case back. Pre-owned condition.