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GERMAN MANUFACTURE

A mechanical movement is a micro-engineering marvel which faithfully measures the passage of time. Energy is stored in a mainspring and transmitted through a series of masculine gear trains to the balance wheel which oscillates back and forth at a constant rate to provide us with a constant time-keeping mechanism.

The 316L stainless steel is the preferred choice of material due to its highly anti-corrosion properties and its ability to produce perfect mirror sheen when polished. We utilise special polishing techniques on our stainless steel case to produce a high-glossed finished, giving you a sense of precious metal.

Aesthetic and design considerations form a large part of our work at J. Monteiro Designs studio. Seen here is one of the many technical drawings of our first model belonging to the Elegância family.

It’s a synthetic crystal with a Mohs scale hardness of 9.0. Only other harder materials like diamond or silicon carbide can scratch sapphire crystal. Seen here is a J. Monteiro watch double curved crystal with anti-reflective coating on the underside to ensure high clarity on the dial.

The little red rubies, termed as “jewels” in the watch movement are made of synthetic materials. They serve as bearings to reduce friction around the gear pivots and storage for the minute amount of lubricant.


The lubricant stays around the walls of the jewels for a sustained period of time and flows slowly to the pivots, ensuring the movement is well-lubricated and stays serviceable for a period of time. In J. Monteiro watches we utilise various kinds of mechanical movements for our watch creation, however seen here is a movement equipped with 21 jewels.


Mechanical watch movements can be categorised into 2 systems; manual-winding and automatic-winding. Seen here is an automatic calibre that winds itself when the wearer is in motion. The gold-plated rotor in Côtes de Genève finishing reveals a finely crafted movement and is responsible for harnessing the energy from the wearer and eventually storing it in the mainspring.

The mainspring is encapsulated in the barrel and stores the elastic potential energy when wound. Winding can be achieved either by manually winding it or by an oscillating mass in the case of an automatic watch. Material know-how for mainspring is highly proprietary and requirements include being unbreakable, fatigue-proof and able to release consistent power over time.

Just some of our daily work in J. Monteiro Designs Studio, where we assemble and disassemble the various components in our factory in Pforzheim in Germany to verify the strict tolerance standards set by our designers and engineers. You can be rest assured that the finished product you receive is a quality timepiece built with tender loving care and impeccable internationally recognized standards of reliability and accuracy which has come to be associated with German-made timepieces.