JLC Calibre 751D automatic movement with 41 jewels, composed of 280 parts; beating rate 28800 vph (approx. 5.3Hz); power reserve approx. 65 hours. Case size 44mm thick; round shape in 18kt rose gold. Black rubber strap band width 22mm with tang clasp. Coin edge bezel also in 18kt rose gold. Black dial features Arabic and index hour markers, rose gold-tone hands, and luminous elements for night-time readability including pulsation markers around the outer rim. Date display located between the 4 and 5 o'clock positions. Chronograph functions with two sub-dials showing elapsed time: one for up to 12 hours; another for up to 30 minutes. Scratch resistant sapphire crystal lens, automatic winding mechanism, visible case back through which the movement can be admired, Swiss Made label, water resistance rated at 100 meters (approx. 330 feet), sport watch style from the Master Compressor series.