Just like an engine powers a car, a watch movement, also known as a “calibre” is the internal mechanism that makes a watch work. Think of it as the heart of the watch, pumping energy into all of the watch’s functions from its hands to its chronographs to make everything work in harmony. While a polished exterior is a must for any quality timepiece, it’s what’s on the inside that really counts.

AUTOMATIC MOVEMENT mobile_title_border

An automatic movement is a mechanical watch movement that operates by the continuous motion of the wearer’s wrist.

An automatic movement is a mechanical watch movement that operates by the continuous motion of the wearer’s wrist. The rotor, a half-disc metal weight, pivots freely around a spindle, and a movement in either direction helps to rewind the mainspring. Automatic watches don't need to be wound if worn every day. The watch is regulated by a spiral balance wheel that vibrates 6-8 times per second. An automatic movement is composed of more than 70 parts and up to 230 parts for the Calibre 360. While it is slightly less precise than a quartz movement (by a few minutes per month), it is the ultimate example of Swiss watchmaking expertise and tradition.

All TAG Heuer automatic movements are made in Switzerland and must meet extremely strict criteria for precision before they make it onto your wrist. Their high frequency ensures excellent mechanical precision. A number of TAG Heuer automatic movements are awarded an Official Swiss Chronometer Control (C.O.S.C.) Certificate, the ultimate recognition of precision and reliability.

We know you don’t like to take time out to recharge, so we made sure your watch can keep up. TAG Heuer automatic movements have a power reserve of about 42–48 hours, depending on the model. This means that when they are fully wound they can continue to operate for almost two days and nights without being worn. You can also rewind the mainspring manually by unscrewing the crown and pulling it out gently to position 1. Note: do not forget to screw the crown down again in position 0.

Our watches are designed to operate continuously, but an automatic watch movement does require regular maintenance to keep it in mint condition. With proper care, it will work perfectly and last for generations. TAG Heuer recommends a maintenance service every two years in addition to an annual water-resistance checkup. All watches maintainted by an official TAG Heuer service center have a one-year extension warranty.

BELT-DRIVEN MOVEMENT mobile_title_border

The patented belt-driven transmission is a high-yield relay of 5 notched micro drive-belts whose tension is controlled by 2 turnbuckles


The Calibre S proposes a new method of measuring and reading time by means of bidirectional systems that are mechanically independent but synchronized

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