Sinn U2 EZM 5 User manual

MODEL SERIES

6 – 9
10 – 11
12 – 15
16 – 19
20 – 21
22 – 23
24 – 27
28 – 29
30 – 31
CONTENTS
SINN SPEZIALUHREN ZU FRANKFURT AM MAIN
PERFECT DIVING WATCHES
DNV GL CERTIFIES SINN DIVING WATCHES
(EZM 5) – THE MISSION TIMER FOR DIVERS
MADE OF GERMAN SUBMARINE STEEL
Ar-DEHUMIDIFYING TECHNOLOGY
INSTRUCTIONS FOR USE
ADJUSTING THE LENGTH OF THE WATCH STRAPS
TECHNICAL DETAILS
SERVICE

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DEAR CUSTOMER,
Since the company was founded
in 1961, we have focused on the
creation of high-quality mechanical
watches. Nowadays, watch lovers
associate innovation and patents
with the name of Sinn Spezialuhren.
And it’s not just our diving watches
that stand for high performance,
robustness, and durability, quality
and precision.
These watches do, however,
constitute an outstanding example of
how we repeatedly push the limits of
what can be achieved physically in
development.
We are driven by the question
of which new technologies and
materials can be used to make
diving watches safer and more
suitable for everyday use.

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It is often worth indulging in a little lateral thinking to see what is going on in
other industrial sectors or fields of science. It is therefore no coincidence that
the U1, U2, U200, U212, U1000 and UX are made from high-strength, seawater-
resistant German submarine steel. The T1 and T2 models are another
example. All case parts for these mission timers are made from high-strength
titanium. Both submarine steel and high-strength titanium predestine our
diving watches for use in salt water.
Fittingly, we work closely with an independent company specialising in
technical maritime security. The world’s largest classification society DNV GL
(formerly Germanischer Lloyd, Hamburg) checks and certifies the diving-
watch data – including compliance with European diving device standards,
which is unique in the watch industry.
I am delighted that you have decided to buy a SINN diving watch 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 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 over the company. 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 insider’s 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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Advancements in endurance testing
Take, for example, the absolutely condensation-
free, anti-reflective, german submarine steel diving
watch – made possible by HYDRO Technology.
Other examples include a chronometer
chronograph fashioned from a 22-carat gold alloy
that is as hard as stainless steel and a chronometer
with a magnetic resistance of up to 80,000 A/m.
There are also watches with a clockwork
mechanism optimally protected from aging
by an inert gas and integrated dehumidifying
capsule. The list would not be complete without
mentioning the development of mission timers
(Einsatzzeitmesser or EZM in German) for firefighters,
for special police units and border patrol guards
as well as Temperature Resistance Technology
to keep mechanical watches performing at
temperatures ranging from − 45 °C to + 80 °C. This
technology has proven its worth in the EZM 10
TESTAF model, for example, used as part of the
official approvals procedure for Airbus Helicopter’s
(formerly Eurocopter) EC 145 T2 high-performance
helicopter. Hot and cold climate tests and
high-altitude experiments were carried out in the
deserts of the USA, the Rocky Mountains and the
frozen wastes of Canada. The watch was worn
unprotected, outside the pilot’s overall, during cold
climate tests at temperatures reaching − 45 °C.

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Innovations and certifications
The world’s largest classification society for maritime safety DNV GL (formerly
Germanischer Lloyd, Hamburg), has been testing our diving watches
for pressure and water resistance since 2005. As part of DNV GL’s official
certification process, our diving watches have been treated as part of diving
equipment since 2006 and tested and certified in accordance with European
diving equipment standards. This is unparalleled in the watch industry.
We have had selected pilot’s watches tested and certified to the technical
standard for pilot’s watches (TESTAF) by Aachen University of Applied
Sciences since 2012. The TESTAF, the result of a research project at the initiative
of Sinn Spezialuhren, ensures that a pilot’s watch meets all timekeeping
requirements during flight operations in accordance with visual and/or
instrumental flight regulations and is suitable for professional use.
DIAPAL is one of our most important technological developments, with oiling
no longer needed for the most important functions in the watch thanks to
the materials we select. This technology was first used in 2001. With the aid
of TEGIMENT Technology, we achieve greatly increased scratch resistance
through surface hardening.

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Ongoing advancement in technology and quality
Our top priority has always been to develop watches that 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 has to first 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 of 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 meet all their design specifications
in full. Take for example the SZ02 calibre of our
U1000 diving chronograph. The 60-minute scale
of the stopwatch minute counter is much simpler
and more intuitive to read than the 30-minute
scale commonly found on other watches. The
hand-engraving represents a highly personal form
of refinement. If required, our specially trained
engraver can etch a name, initials, monograms
or symbols onto the rotor, movement bridge and
case back.

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PERFECT DIVING WATCHES
Our watches are famous for their outstanding functionality. We
consistently implement this principle in our accurate timepieces
for pilots as well as in our diving watches. The technical
development of such perfect time-keeping instruments is one
of the greatest challenges for our engineers and watchmakers.
During a dive, absolute water resistance, perfect readability in all
lighting and water conditions and extreme durability are of life-
saving importance.
This is due to the fact that we develop these watches exclusively
for their intended purpose – with the consequence that the form
follows the primary function. Thus we ensure an extremely high
standard of reliability, safety and practicality in everyday use.

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DNV GL CERTIFIES SINN DIVING WATCHES
So what does DNV GL (formerly Germanischer Lloyd) have to do with a
watch manufacturer from Frankfurt am Main? The renowned company tests
and certifies our diving watches according to a variety of criteria. One
test focuses on water resistance and pressure resistance, while a second
test procedure covers something never done before in the watchmaking
industry: certification in accordance with the European standards for diving
equipment!
Testing for water resistance and pressure resistance
In each dive, time plays a crucial role in survival on every dive. Diving
watches must therefore be water-resistant, reliable and durable, and
guarantee perfect readability in all lighting and water conditions. The
information we provide about our diving watches is thus not merely captured
in words, but proven in practice as well. Since 2005, DNV GL has been
testing our diving watches for water resistance and pressure resistance. In
accordance with these certification standards, the EZM 3 and EZM 13 are
pressure-resistant to 50 bar, the T1, U1 and the U1000 series are pressure-
resistant to 100 bar, while the T2, U2 and U200 series are pressure-resistant
to 200 bar and the UX series is actually pressure-resistant to any accessible
diving depth. For this series, DNV GL has confirmed the pressure resistance
of the case to 12,000 m and of the movement to 5,000 m diving depth. The
tests are repeated at regular intervals on all of these watches in order to
document the consistency of the quality.

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Germanischer Lloyd (now
DNV GL) has confirmed
and certified the pressure
resistance.

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A premiere: certification in accordance with European diving device
standards
In a standardised test situation, will a diving watch deliver the same reliable
performance as, say, a breathing apparatus? To answer this question, we were
the first who have watches tested and officially certified according to the
European standards for diving equipment. Also these tests are performed at
regular intervals for all these watches. The testing and certification according to
the European standards EN250 and EN14143 was completely new territory for
both sides. This was the case because the standards for diving equipment
cannot be applied to watches without modification. The experts at DNV GL
thus adapted the standards appropriately and defined two series of tests. In the
first of the two, they put the timepieces in a test cabinet for three hours at –20°C,
then for three more hours at +50°C. The timepieces were subsequently checked
for accuracy and functional reliability at both temperatures. In a second test,
the watches had to withstand three hours at –30°C and 3 hours at +70°C with
95% humidity. The result: Temperature resistance and perfect functioning were
documented and certified for the watches in the U1, U1000 (since 2007), U2,
U200 (since 2009), T1, T2 (since 2013), EZM 13 (since 2014) and EZM 3 series after
both tests. The UX series watches were also certified; however, these were
subjected to a modified test involving temperatures between –20°C and +60°C
due to their battery operation and oil filling.

15
Germanischer Lloyd (now
DNV GL) has confirmed and
certified the type-based test
of temperature resistance
and functionality in
accordance with the
European diving device
standards EN250:2000 and
EN14143:2003.

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The diving watch U2 is a professional mission timer which uses genuine
German submarine steel, a material with extreme seawater-resistance
and the highest level of non-magnetic properties. SINN special oil and
an adjusted position tolerance of the parts in the diving watch U2 series
guarantee operation at temperatures ranging from − 45 °C to + 80 °C.
And that’s not all: with the diver’s bezel, this diving watch is well-equipped
to measure the duration of a dive accurately. Fogging of the dial poses a
safety risk when diving. To prevent this, we use EDR seals. This material, with
its extreme chemical resistance and only a quarter of the gas permeability
of conventional seals, prevents moisture from diffusing into the diving
watch. The slightly domed, 4.2 mm thick scratch-resistance anti-reflective
sapphire crystal glass withstands even the highest pressures. The case is
filled with a protective gas, while three drying capsules keep the interior dry.
(EZM 5) – THE MISSION TIMER FOR DIVERS MADE
OF GERMAN SUBMARINE STEEL

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German submarine steel guarantees seawater resistance
First-class material quality makes this diving watch completely resistant to
external influences. And the original German submarine steel guarantees
seawater resistance. This is precisely the steel used by ThyssenKrupp for the
external hulls of the U212 A class of the German Navy, which are currently the
most advanced non-nuclear submarines in the world.
TEGIMENT Technology and the Black Hard Coating
With the aid of TEGIMENT Technology, we achieve greatly increased scratch
resistance through surface hardening. TEGIMENT Technology increases the
level of hardness of the base material, such as submarine steel, many times
over. To achieve this, we do not apply any coating. The material itself is
hardened in the surface area. The hardened surface is far better protected
against scratching than the surface of the base material. The tempering with
the TEGIMENT Technology forms the basis for the application of the Black Hard
Coating – a high quality PVD coating.
The captive diver’s bezel
The diver’s bezel can easily be operated while wearing diving gloves. To
protect against unintended adjustments, the diver’s bezel may only be turned
counter-clockwise. Because the bezel plays a vital role in time measurement,
it is an extremely sensitive safety feature. That’s why we have protected
our bezel against loss with a special construction. Our secure attachment
differs significantly from the conventional snap-in mechanism: loss due to
unfortunate impacts is practically impossible, because the captive bezel is
securely fastened to the centre section of the case.

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The colour scale for the Ar-Dehumidifying Technology: the capsule continues
to absorb moisture until the darkest colouration is reached.
Indication colours of the drying capsule
Pale blue
Up to 25%
saturation
Light blue
Up to 50%
saturation
Medium blue
Up to 75%
saturation
Dark blue
Up to 100%
saturation
Initial condition Drying capsule
saturated
u
Ar -DEHUMIDIFYING TECHNOLOGY