Sinn 656 Series User manual

MODEL SERIES 656/657

6 – 9
10 –11
12 –13
14 –19
20 – 21
22 – 23
24 – 25
CONTENTS
SINN SPEZIALUHREN ZU FRANKFURT AM MAIN
MODEL SERIES 656
MODEL SERIES 657
INSTRUCTIONS FOR USE 656/657
TECHNICAL DETAILS 656
TECHNICAL DETAILS 657
SERVICE

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DEAR CUSTOMER,
we know from numerous
conversations that the people
who buy our watches do so out of
conviction. This includes people with
a pronounced affinity to technology
who are fascinated, for example,
by the solutions we have devised
for magnetic field protection and
scratch-resistance. Some of our
customers, such as divers, pilots or
the German GSG 9 special police
unit, need to rely on their watch in
their respective careers because
their life depends on it.
They all swear by the high
performance, resilience and
durability, as well as the quality
and precision of these timepieces.
The water and pressure-resistance

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data are reviewed and authenticated at regular intervals, as is the case
with our diving watches, for instance. We, for our part, give absolute priority
to functionality, which ultimately determines the design. Our watches only
feature technological attributes that really make sense. All the while, we
remain committed to our guiding principle that products have to speak for
themselves.
The basic question that we ask ourselves is: which innovative technologies
and materials can be employed for our craft and provide solutions for
rendering our watches even more practical for everyday use? It is often worth
indulging in a little lateral thinking to see what is going on in other industrial
sectors or fields of science. We repeatedly go to the limits of physical
resources to upgrade our watches – with the aim of making what's good
even better. Most of our best developments are yet to come!
I am delighted that you have decided to buy a SINN timepiece and hope
that it will continue to give you pleasure for many years to come.
Yours sincerely, Lothar Schmidt

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It was back in 1961 that the pilot and blind-flying instructor Helmut Sinn
founded the company. Since then, we have been committed to producing
high-specification mechanical watches. In 1994, the graduate engineer
Lothar Schmidt took control. This marked the beginning of a new era for the
SINN brand, because the new owner took a decisive step towards more
innovation. Under his leadership, new technologies and materials were
introduced, thus providing the crucial incentives for our company's evolution
and gradual emergence as an insiders' tip for lovers of fine watches. Today,
our name stands for technical innovations, much to the delight of both the
trade and our customers alike.
SINN SPEZIALUHREN ZU FRANKFURT AM MAIN

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All developments thoroughly tested
Take, for instance, the absolutely condensation-
free and anti-reflective diving watch made of
stainless steel – designed with HYDRO Technology.
Other examples include a chronometer
chronograph fashioned from a 22-carat gold
alloy, which is as hard as stainless steel, and a
chronometer whose resistance to magnetic
interference is 20 times greater than normal. Or
those watches filled with protective gas and
featuring an integrated dehumidifying capsule to
counteract moisture infiltration and the ageing of
the watch movement. This list would not be
complete without mentioning the development of
so-called Einsatzzeitmesser (EZM) watches for
special police units and border guards, and the
Temperature Resistance Technology that allows
mechanical watches to perform at temperatures
ranging from – 45 °C to + 80 °C. The 303 KRISTALL
model passed the fire and ice test during the 1998
Yukon Quest sledge dog race that crosses the icy
wilderness of Canada and Alaska, where
temperatures are known to plunge to – 40 °C. The
watch was strapped to the arm of some of the
participants on top of their protective clothing.
This was followed in 1999 by the 203 ARKTIS model.
This diving chronograph passed its field test in the
North Polar Sea with flying colours.

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Innovations and authentications
One of our most important inventions is the oil-free DIAPAL Technology,
based on low-friction materials for the key functional parts of the watch,
enabling them to run without lubrication. This technology was first employed
in our jubilee watch, the palladium alloy/white gold Frankfurt Financial
District Watch. TEGIMENT Technology, with which SINN achieves a virtually
scratch resistance surface for its watches, represents another milestone.
Other innovations include diving watches made from original submarine
steel, as used in the construction of the outer shell of German class 212
submarines. Germanischer Lloyd, the world's biggest classification society
providing marine safety services, has been testing the aspects of water and
pressure resistance since 2005. Moreover, an official authentication process
conducted by Germanischer Lloyd in 2006, SINN diving watches as diving
gear for the very first time in the watch making sector and tested them
in keeping with European diving equipment standards. The result: these
timepieces passed the temperature resistance and functionality tests with a
sensational success. All test results are authenticated with signature and seal.

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Ongoing advancement in technology and quality
Our top priority is always to develop watches which offer superior
performance – both in daily and in professional use. Which is why our
engineers are working continually to identify which innovative methods,
materials and technologies are best suited for optimising our watches.
Each new development first has to undergo rigorous practical tests before
being incorporated. And no watch leaves our workshops before it has
been subjected to thorough checking and fine adjustment by our master
watchmakers.
Workshop modifications and hand-engraving
From the robust case and the polished crystal
through to elaborate refinements: we make sure
that each and every detail in our watches is fit
for purpose. The same applies to our workshop
modifications. Only the perfect interaction of all
components and technologies ensures that our
watches can meets all its design specifications
in full. For example: the SZ02 calibre of our U1000
diving chronograph. The 60 minute scale of
the stop-minute counter is much simpler and
more intuitive to read than the 30 minute scale
commonly found in other watches. The hand
engraving represents a highly personal form
of refinement. If required, our specially trained
master engraver can etch a name, initials,
monograms or symbols onto the rotor, movement
bridge and case back.

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Just how functional can a watch be? This is a question we've been
asking ourselves since founding the company. And the answer? Our
cockpit navigation clocks. Conceived for the instrument panels of
aeroplanes and helicopters, and optimised to provide rapid and clear
readability, they are specifically designed to offer time measurement
in its purest form. And they have now inspired us to create a watch with
these same characteristics (and Magnetic Field Protection of up to
80,000 A/m) to complement our range of instrumental chronographs.
The dial design ensures especially clear readability:
– Maximum contrast of the hands, indices and numerals against the
glare-free black dial.
– Extremely large numerals for intuitive orientation even in low light levels.
– Striking hand profiles.
– Special long-lasting, luminous paint on the minute and hour hands and
indices to ensure accurate reading even in adverse conditions.
MODEL SERIES 656

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Based on the 656 model range, and designed as a functional instrument
watch in the tradition of our cockpit navigation clocks, this pilot's watch
also features a pilot's bezel which permits its wearer to measure or check
set time intervals.This is a decisive criterion particularly in aviation —
reason enough for us to give this important function a superior design.
The stainless steel pilot's bezel with minute ratcheting can be rotated on
both sides and features a special mechanical system developed by Sinn
to protect against loss. The labelling is silver on an inset, black anodised
aluminium ring to ensure optimal scale readability. A luminous triangle
serves as the 0/60 minute mark.
MODEL SERIES 657

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INSTRUCTIONS FOR USE
Model series 656
Model series 657
Hour hand
Hour hand
Minute hand
Minute hand
Second hand
Second hand
Date display
Crown position
0 1 2 3
Crown position
0 1 2 3
Date display

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To wind the watch (crown position 1)
The crown is screwable (crown position 0). To loosen the crown, turn it
counter-clockwise. The movement is wound by turning the crown clockwise.
About 40 winds of the crown are generally enough to ensure its reliable
functioning. Under normal circumstances, simply wearing the watch every
day should suffice to keep the self-winding mechanism wound. The power
reserve allows you to take off your watch overnight without having to rewind it.
Time adjustment (crown position 3)
In crown position 3, the motion is paused. This helps you to set the watch
precisely. For accurate time setting, we recommend moving the hand past
the desired minute marker and then adjusting it counter-clockwise. Please
make sure that the date changes at midnight and not at midday when
adjusting the time. Move the hand forward until the date changes before you
attempt to set the time. The movement restarts as soon as you leave crown
position 3.
Quickset date adjustment (crown position 2)
Set the crown in the position 2 and turn it counter-clockwise until the correct
date appears in the date display window.
Please take care to fasten the crown after making adjustments.

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ADJUSTING THE LENGTH OF THE WATCH STRAPS
If you don't know how to shorten or lengthen the solid bracelet, please
contact your SINN dealer or the watchmakers in our customer service
department in Frankfurt am Main. Our customer service employees are also
happy to help you on the telephone.
Adjusting the length of the solid bracelet
For optimal comfort, each side of the watchband should contain the same
number of links. If you choose to remove an uneven number of links, the
upper portion of the watchband (on the 12 o'clock side) should be longer.
For example: If you want to shorten the bracelet by removing a total of three
links, you should remove two from the 6 o'clock side and just one from the
12 o'clock side. When they leave the factory, the solid bracelets have the
same number of links on the 12 o'clock side and the 6 o'clock side. If you
have requested a shorter length, please be sure to check the number of
links on each side before making any additional changes.
1. Remove the screws on the side of the link you wish to remove,
or at the point where you wish to add a link.
2. Remove the excess link or insert the new one.
3. Before replacing the screw, add a small drop (not too much!) of the
threadlock (AN 302-42 medium-strenght) adhesive to the screw thread.

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Adjusting the length of the silicone strap
1. Release the silicone band from the clasp. To do so, using the pointed end
of the band replacement tool to push the spring bar out of the fastener.
The other side of the spring bar can be removed while the fastener is
open, enabling you to remove the silicone band.
2. Using a knife or scissors, cut the silicone band in the middle between two
metal pins. You should shorten the band symmetrically and little by little,
starting from the clasp, until you have reached the desired length. Test the
length from time to time before proceeding. Shortening both ends by the
length of one metal pin results in a total difference of 10 mm in the length
of the strap; shortening one end reduces the length by 5 mm.
3. Remove the first metal pin and replace it with the spring bar. Then
reattach the clasp to the band.

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How to install the strap with a small butterfly clasp
There are two ways of installing the spring bar using the small butterfly clasp.
We recommend inserting the bar in the opening shown here in red. Should
the silicone strap be too tight, use the second option (shown here in white).
If you want to shorten the overall length of the silicone strap, refer to steps 1 to 3.
Option 1 Option 2

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656 S/656: luminous