PRIMUS Diver – Precision timekeeping on and under the water
2009 saw the legendary Swiss-German watch brand Hanhart launch an exclusive collection of mechanical chronograph wristwatches which builds on the tradition and expertise of the own-brand watch manufactory and combines this with the latest technology and progressive design. The collection is called Primus, and the Diver model is the ideal watch for timekeeping both on and under the water.
The Swiss-German watch brand Hanhart is known for its high-precision and 100% reliable instrument watches for use in the air, on the land and on the sea. It combines cutting-edge Swiss and German knowledge and skills with the long-standing tradition and expertise of its own manufactory, which has its origins in the watch business established in 1882 by Johann Adolf Hanhart in Diessenhofen in the Swiss Canton of Thurgau. The company, which remains the leading manufacturer of premium stopwatches to this very day, not only launched the first affordable mechanical stopwatch in 1924, but it also began manufacturing wristwatches at an early stage at its production site in Gütenbach, southern Germany. These included the single-button “Calibre 40” chronograph, primarily used by naval officers, as well as the legendary “Calibre 41” and “Tachy Tele” pilot’s chronographs, which date back to 1939. These chronographs are steeped in history, and today their replicas have become coveted collector’s pieces and connoisseur’s items for those with a penchant for fine precision watches.
Reflecting on core competence
Working in close collaboration with the brand’s own manufacture workshops in Gütenbach and highly specialised suppliers from the Swiss watch sector, a new, progressively designed collection of mechanical chronographs was developed under the name “Primus” and unveiled for the first time in 2009. It represented a sign of the times: an exclusive range of sporty chronographs with a progressive design which combines historical features with state-of-the-art technology. The Pilot, Racer and Diver models meet the highest quality standards and are all based on the brand’s traditional core competence.
Committed to tradition
Reminders of the watch manufacturer’s tradition are deliberately made clearly recognisable: one of the brand’s distinctive features, the red reset button, underlines the relationship between Hanhart’s first pilot’s chronographs, its mechanical stopwatches and the new collection. It has been a distinguishing characteristic of Hanhart watches since 1939 and was previously intended to prevent pilots from unintentionally resetting the stop time. For the models featured in the Primus collection it has been finished with anodised aluminium. The thin, striking fluted bezel with inlaid red marking is also reminiscent of the design of the watch manufacturer’s legendary chronographs. With its size and feel, even the crown harks back to the design of the early precision watches.
Top functionality, ease of use and maximum readability
In order to ensure safety and ease of use for the measurement of time intervals or for air and sea navigation, or when using a stopwatch to measure interval times and end times or distances on dry land, the first priority was to ensure maximum functionality, ease of use and outstanding reading precision. There was no need for unnecessary gimmicks or design features on the case and dial, and Hanhart continues, as always, to stand by this maxim. To ensure an accurate time display and precision chronometry, the models in the Primus collection are equipped with an automatic calibre modified to a bicompax display, featuring a rotor with a skeletonised Hanhart logo. This allows the small seconds to be clearly positioned at 9 o’clock and the 30-minute counter to be arranged at 3 o’clock – a configuration which Hanhart has customarily used from the very beginning. Perfect readability is guaranteed not least by the clear, generously proportioned design of the Arabic numerals, index marks, the minute-circle and hands. In the Primus Diver, these – as well as the auxiliary dials used for the small seconds and the chronograph counter – are clearly visible even in the dark thanks to the Super-LumiNova® coating.
A new level of wearing comfort
The solid, elegant and high-quality stainless steel or black DLC-coated stain-less steel case highlights the sporty, contemporary aesthetic of the Primus chronographs, while the flexibly screwed lugs ensure optimum wearing comfort on all wrist sizes. The black or blue dial is encased by a convex, internally anti-reflective sapphire glass, while a screwed-down sapphire glass case back allows the wearer to see the fascinating interplay of the movement and the rotor. The Primus Diver is finished off with a black or blue strap made from vulcanised rubber with a moulded Hanhart logo and a practical, easily adjustable folding clasp with inlaid red marking. Overall, as representatives of the latest generation of Hanhart chronographs, the models featured in the Primus collection set new standards in contemporary design.
Movement: HAN3809 modified automatic chronograph movement (bicompax), based on the Valjoux 7750 calibre; 28,800 vibrations per hour, 4 Hz; 28 jewels; rotor with a skeletonised Hanhart logo; power reserve of min. 42 hours
Functions: Small seconds at 9 o’clock, 30-minute counter at 3 o’clock, date display at 6 o’clock
Case: Stainless steel or black DLC-coated stainless steel; anodised aluminium red reset button; fluted, concave, unidirectional rotating bezel with inlaid red marking; convex, internally anti-reflective sapphire glass; screwed-down, internally anti-reflective sapphire glass case back; large screw-in crown; flexible lugs; diameter 44 mm, height 15 mm; water-resistant to 30 bar/300 m
Dial: Black; Super-LumiNova®-coated, luminous Arabic numerals, index marks, hands and auxiliary dials for small seconds and 30-minute counter
Strap: Vulcanised rubber with moulded Hanhart logo, non-allergenic; folding clasp with inlaid red marking (anodised aluminium) made from stainless steel or black DLC-coated stainless steel