
DS Concept
The secret behind the amazing resistant properties of Certina watches is the DS Concept! This Double Security system has been delivering maximum protection for wristwatches since 1959. Over the years, it has been continuously refined and adapted to meet the changing requirements of modern life – read on to discover its advanced credentials.

Cosc
The renowned Official Swiss Chronometer Testing Institute (“Contrôle Officiel Suisse des Chronomètres”, or COSC) was founded in 1973 and is based in La Chaux-de-Fonds, Switzerland. It is an independent public institution serving the Swiss art of watchmaking. Its strict criteria are considered the standard for evaluating the precision of modern wristwatches – whether equipped with mechanical or quartz movements.

My cosc
Please enter the number several digits long, which is right at the bottom of your watch's chronometer certificate:

Nivachron
An innovative new titanium-based alloy that is used for balance springs. This revolutionary material was developed in collaboration with the Swatch Group and is used in selected brands. Nivachron springs are highly resistant to magnetic fields, shock, ageing and temperature fluctuations, lending them extremely high mechanical precision and making them remarkably reliable in everyday use.

Materials
The Certina brand is careful to use high-quality, reliable and robust materials in its timepieces to meet levels of comfort, aesthetics and sports design expected for everyday wear.

Powermatic 80
In addition to being highly accurate, the innovative Powermatic 80 automatic movement has a power reserve of up to 80 hours – almost twice as long as comparable models. This means that a fully wound watch left unworn for three days – for example, over the weekend – will still not need resetting, as the Powermatic 80 mechanism continues to keep time.

1/10th of a second in real time
Each chronograph is equipped with the tenth of a second feature. Selected Certina models visibly depict the tenth of a second in real time at 2 o'clock on the auxiliary dial – with ten increments per second. It is displayed when you press the related push-button, and stops automatically after one minute, while the chronograph continues to measure the time accurately down to a tenth of a second.

Precidrive™
The name of an innovative technology which ensures the utmost accuracy at Certina. The timepieces with Precidrive™ quartz movements achieve real chronometer precision. With a rate deviation of +/-10 seconds per year, a Precidrive™ timepiece is around eight to ten times more accurate than traditional quartz timepieces.