Sapphire crystal mirror, three-dimensional black enamel chronograph dial, flying back chronograph function. Luminous scale and hands, 12-hours chronographer dial at 9 o’clock position, independent small seconds dial at 6 o’clock position and calendar display function, 30-minutes chronographer dial at 3 o’clock position. Blancpain Fifty Fathoms Chronographe Flyback 5085FB-1140-52B Watch. Screw-in waterproof crown. This watch consists of 308 parts, 37 drills, swing frequency 21600, power storage for about 40 hours, and excellent walking state.