Frederique Constant FC-303MC5B4 Classics Index Automatic Silver Dial Men's Watch

The machinery inside a watch that keeps things ticking is called the movement or a calibre. A synonym of size, the word ‘calibre’, first used as a watchmaking term in 1715, originally referred to the build of a watch movement—the layout, dimensions, shape and size of the wheels, barrels, bridges and so on. Today the word is a substitute for movement, the complete mechanism with the mainspring, escape wheel, bridges, gear train, and other components, including the rotor in automatic watches. Calibres are either mechanical or quartz-based. While the latter are powered mostly by a battery, the former can either be manual winding, or self-would by an oscillating mass or rotor.

Movement
Automatic

Movement/Caliber
FC-303 caliber, automatic

Case material
Steel

Bracelet material
Leather

Case material
Steel

Case diameter
40 mm

Thickness
10 mm

Crystal
Sapphire crystal

Dial
Silver

Bracelet material
Leather

Bracelet color
Brown

Clasp
Buckle

Clasp material
Steel

Water resistance
5 ATM