Sinn 910 Anniversary

The Sinn 910 Anniversary features a split-second chronograph paired with a drop-dead gorgeous cream dial and highly wearable 41.5mm stainless steel case.

This detailed review of the Sinn 910 Anniversary includes live images, specification details and pricing.

Sinn 910 Anniversary

Terminology can, at times, prove bewildering to the non-expert. A split-second chronograph is sometimes referred to as a doppelchrono or a rattrapante. This complication features a chronograph hand superimposed over a split-seconds hand which is hidden from view unless called into action.

A rattrapante allows the wearer to measure two time intervals with the split second hand proving useful for recording the duration of intermediate times.

Chronographs are in themselves highly complex as the user is interfacing with the watch, introducing a dynamic influence on the movement. Moreover, the forces at play within a chronograph movement are significant and consideration has to be given to the hands not bending when the reset button is pressed, or indeed other components suffering under the immense stresses at play.

Sinn 910 Anniversary

The rattrapante is even more complex than a regular chronograph as the gap between the chronograph hand and the split seconds hand has to be minimal in order to prevent any parallax error. Only a small number of companies are capable of offering a watch equipped with a rattrapante.

Sinn is one company with the technical prowess to produce a rattrapante. Recently, it unveiled its 910 Anniversary model, equipped with the split-second complication, to celebrate its 55th anniversary.

The dial

Black slender hour and minute hands provide peerless contrast with the cream dial. The tips of the black hour and minute hands are supremely slender and point to the batons and minuterie with laser-like precision.

Sinn 910 Anniversary

Adjacent the crown is a 30-minute chronograph register with a red hand denoting that this is a chronograph related indication. Positioned opposite is a small running seconds display which employs a black hand. Both subdials prove simple to read, despite their modest dimensions. Furthermore, the bi-compax layout proffers balance, courtesy of the symmetry manifest.

Each hour is denoted with a black-toned applied baton. These are rectangular in form and evince a very clean, crisp appearance. Each baton spans the minuterie which features neat black markings and Arabic numerals, presented in two digit form.

Encircling the central area of the dial is a tachymeter scale. This is an interesting take on a tachymeter scale with the outer values, shown in red, showing slow speeds and the faster speeds being shown on the inner scale. For example, if the chronograph hand revolves around the dial 720° then the speed of an object over a mile is 30 miles per hour (mph), shown on the red scale. Likewise, if the the chronograph hand revolves around the dial 180°, the speed of an object over a mile is 120 mph, shown on the grey scale.

The case

The stainless steel case measures 41.5mm in diameter with a case height of 15.5mm. The bezel, upper lug surfaces and case-back are highly polished, while the case-band is satin-brushed. Each push-piece has a satin-brushed vertical flank with the circumference being highly polished.

Sinn 910 Anniversary

One aspect of the Sinn 910 Anniversary which particularly stands out is that the German watch proffers matchless wearer comfort. The convex case-back nestles into the fleshy part of the wrist, according a congenial fit.

The lugs are short, protruding only marginally from the case and tapering slightly downwards. Again, heightening wearer comfort.

The observant reader will notice that the watch is equipped with three push-pieces. The red chronograph hand is actuated by pressing the push-piece at 2 o’clock. Pressing the same push-piece again causes the red chronograph hand to stop. Pressing the push-piece at 4 o’clock causes the chronograph hand and 30-minute chronograph register to reset. This is similar to most chronographs. However, where this chronograph differs is that a third button, positioned at 8 o’clock, operates the split seconds hand. Pressing the push-piece at 8 o’clock while the chronograph hand is in operation causes the split second hand to halt while the chronograph hand continues to revolve. If the wearer presses the push-piece at 8 o’clock again, the split second hand ‘catches-up’ (meaning of rattrapante) and continues in synchrony with the chronograph hand.

The case-back is equipped with a pane of sapphire crystal to confer sight of the self-winding movement within.

The movement

The Calibre Valjoux 7750 Rattrapante will be familiar to many horophiles. In this instance, the movement has been enhanced and features some eye-catching finissage, including Côtes de Genève motif on the rotor and central bridge. Several components including the balance cock have been adorned with perlage. In addition, the movement is populated with numerous blued screws.

Sinn 910 Anniversary

The column-wheel is blued and grants sight of the levers interfacing with its form whenever the chronograph push-piece is actuated or stopped.

A modest pressure is required to actuate and stop the chronograph, while greater effort is needed to reset the chronograph. The push-piece at 8 o’clock has a very light action, requiring little effort to initiate the split-seconds hand to start / stop.

The Sinn 910 Anniversary is equipped with a hacking seconds, proving highly useful when synchronising with a reference clock.

Accompanying the press loan watch was a test certificate showing the test results for the watch without the chronograph running in four positions. The result showed a mean value of a mere +2 seconds which by any measure is highly impressive.

Sinn is a very technical company and this comes across with the various independent tests it subjects its watches. The watch is shock resistant as per DIN 8308, antimagnetic as per DIN 8309 and meets the ‘technical requirements for waterproofness as set out in standard DIN 8310.

Closing remarks

The Sinn 910 Anniversary is a fitting timepiece to mark a significant milestone in the German company’s history. The dial is an exemplar of clarity and proves user-friendly to read. Furthermore, the cream hue of the dial and the slender tipped hour and minute hands augment ease of interpretation.

The scale of the watch, short curving lugs and convex case-back collaborate to deliver excellent wearer comfort. Pressing the push-pieces reveals a pleasing tactile encounter. Each push-piece confers a positive on/off action, albeit the split seconds push-piece has the best feel owing to the light touch needed.

Sinn has embellished the movement beautifully. Indeed, this is far from a regular Valjoux 7750 with beautiful finishing and the addition of a rattrapante function. The pièce de résistance though is the rattrapante function which grants an additional functionality when compared with a regular chronograph.

This is a brilliant watch, especially considering the price point, and I have to say I was sad to say ‘Auf Wiedersehen’. I anticipate that with only 300 examples of this limited edition these watches will be gone in a split second.

Technical specifications

  • Model: Sinn 910 Anniversary
  • Case: Stainless steel; diameter 41.5mm; height 15.5mm; water resistant to 10 bar (100 metres); sapphire crystal to front and caseback.
  • Functions: Hours; minutes; small seconds; chronograph; tachymeter scale.
  • Movement: Valjoux 7750 Rattrapante; self-winding movement; frequency 28,800 VpH (4Hz); 26 jewels
  • Strap: Tan leather strap & stainless steel bracelet (both provided in presentation box)
  • Price: £5,010 (RRP as at 5.6.2017)

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