Automatic chronometer movement. 18kt yellow gold case. Fixed tachymeter bezel scale in 18kt yellow gold. Analog gold dial with luminous hands and index hour markers, minute markers around outer rim. Screw-down crown. Solid case back. Sapphire crystal scratch resistant. Chronograph functions featuring three sub-dials: 60-second, 30-minute, and 12-hour. Oyster bracelet strap in 18kt yellow gold mesh/skull design (standard for this reference). Case size is 40mm round with an Oysterlock clasp system. Water resistant to 100 meters / 330 feet.