Sinn EZM 13 Divers Chronograph on Rubber Strap

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• Verified Buyer Reviews (7 reviews)
SKU: SI-330

Watch Brand: Sinn

Sinn North America

Automatic EZM certified mechanical diver's chronograph
• Case diameter (mm): 41.5
• Case thickness (mm): 15.0
• Case lug width (mm): 20
• Lug to lug (mm): 47.5
• Weight - head only (grams): 98
• Water resistance: 500 meters
• Case back: Solid
• Case finish: Matte
• Case metal: Stainless steel
• Dial color: Black
• Front crystal: Sapphire
• Inert gas: Filled
• Sinn calibre: SZ-02
• Copper sulphate: Capsule
• Antimagnetic: 80,000 A/m
• Movement: Automatic mechanical
• Manufacturer's limited warranty: 3 years
• Strap or bracelet: Strap
• Warranty service: RGM or Sinn

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WatchBuys Direct Price: $2,970.00
Availability: Temporarily Sold Out

Sinn EZM 13 Diver's Chronograph on Rubber Strap
Sinn EZM 13 Divers Chronograph on Rubber Strap

(Click Image to Enlarge)
Product Details

This watch gets its DNA from the hugely popular Sinn EZM 3 but adds a chronograph function using Sinn's SZ02 calibre.

The design similarities are quite clear when viewing the hands, dial, markers and diver's bezel.

The Sinn EZM 13 features a 41.5 mm bead blasted case in 316 L stainless steel with left mounted controls.

The Sinn EZM 13 is the all-new diving chronograph from Sinn, and features the in-house modified SZ02 movement with 60-minute register.

With 500 meters of water resistance, the Sinn EZM 13 has been tested to European diving equipment standards and certified by DNV GL, and is Mission Timer certified for optimal readability and use with crown and chronograph pushers relocated to the left side of the case.

When we spoke to Sinn's CEO Lothar Schmidt he indicated that this chronograph had been engineered to allow the use of the chronograph pushers underwater.

EZM Design - EZM 13

Sinn is known for their professional special forces watches, called the Einsatzzeitmesser (EZM - in English "Mission Timer") series. Sinn has long been a supplier of watches to various divisions of the German special forces, including the GSG-9, border protection, customs, military and special police divisions. Designing watches for these units carries a number of requirements, including resistance to shocks, water, magnetism and temperature changes among others.

There is also a functional requirement in that the watch must be highly legible and the controls must be both accessible and easy to use in extreme environments. This watch takes its place in the Mission Timer Series as the new Sinn EZM 13, and you'll notice that the crown and pushers have been relocated to the left side of the case as is typical for EZM watches.

Summary of Technologies

  • Water resistant to 500 meters - certified by DNV-GL
  • Sinn D3 crown and pusher systems
  • Calibre SZ02 with redesigned 60 minute register
  • Magnetic Field Protection to 80,000 A/m
  • Copper sulphate capsule to absorb moisture and humidity
  • Inert gasses used to promote a dry and stable environment
  • Bezel is screwed to the case using an exclusive Sinn design
  • Built to the standards of the German special forces - EZM 13
  • Double coated anti-reflective sapphire crystal

Sinn SZ-02 Calibre

What's inside this watch also shows how Sinn engineers watches.  The Sinn modified SZ02 calibre consists of a redesigned minute register which actually counts 60 minutes rather than the typical 30. This register has been enlarged and is placed at the 6 position.

Magnetic Field Protection

This case offers magnetic field protection of up to 80,000 A/m, among the highest for any mechanical watch. Magnetism can cause dramatic swings in the timekeeping of a mechanical watch movement. People are often exposed to magnetic fields without even knowing so – frequent high altitude flying, metal detectors, audio and video equipment, medical equipment and computer equipment to name a few.

Dehumidfication Technology

Mechanical watches require oils to ensure proper operation, and the proper care of any mechanical watch movement mandates that these oils maintain both their viscosity and lubrication properties.

Sinn has found that filling the case with inert gas can help prevent the introduction of moisture and humidity to the case, as well as provide a more stable environment for the oils that lubricate the movement. This inert gas mixture, signified by the Ar symbol on the dial, is used to fill the watch case prior to being sealed. This will prevent air from entering the watch case, which will promote a dry and stable environment, but also prevents the dial and crystal from fogging.

The second aspect of this technology is a dehumidifying copper sulfate capsule that absorbs unavoidable diffused atmospheric moisture within the watch, thus slowing down the aging process of the movement inside. A second advantage is that any condensation that were to develop does not appear underneath the crystal, even in very humid weather conditions. The dehumidifying capsule turns various shades of blue according to its degree of saturation, displayed through a small sapphire crystal window.

Other Features

Screw-down crown. Crown and chronograph pushers are sealed and protected by a specific material used in chemical vacuum technology.

Matte finish stainless steel case with solid case back. Sapphire crystal with luminous hands and hour markers. Watch is water resistant to 500 meters and is suitable for diving.

We welcome the new Sinn EZM 13 to Sinn's collection of Mission Timers.  We know that this watch will be in high demand for some time, just as the Sinn EZM 3 continues to be one of the most popular Sinn watches more than a decade after its initial introduction.

This watch is fitted with a Sinn silicone rubber strap with tang buckle.

Great choices to add to this watch:

WatchBuys is the official and authorized North American distributor and importer for Sinn watches.

When you purchase your new Sinn watch from WatchBuys, you'll not only get a finely engineered timepiece with excellent value for money, you'll also benefit from the WatchBuys Sinn Advantage.

WatchBuys Advantage #1

Because we are the official and authorized North American Sinn distributor, your name and watch serial number will be automatically registered in our database for a Sinn manufacturer's limited warranty which we pass through.

This means that should your watch require service during the Sinn manufacturer's limited warranty period, service will be provided by Sinn in Germany when you return your watch to them. This Sinn manufacturer's limited warranty is transferable to subsequent owners as allowed by Sinn.

You are responsible for paying the shipping charges to Sinn, and all repairs that Sinn approves under its warranty are at no charge. Sinn will also pay the return shipping charges to the address you specify.

The Sinn manufacturer's limited warranty period is as follows:
  • Watches in the EZM Series: 3 years
  • Watches marked AR containing inert gas: 3 years
  • Watches in the DIAPAL Series: 5 years
  • All other Sinn models: 2 years

WatchBuys Advantage #2

As an added benefit to those who purchase Sinn watches from WatchBuys, you may choose to have your warranty repairs serviced through our US service center, RGM Watch Service located in Mount Joy, Pennsylvania. This added service saves our clients the time and effort of returning their watches to Germany for repair. This benefit is transferable to subsequent owners who purchase directly from the original registered owner.

Please note that you are responsible for paying shipping and insurance charges for sending your watch to RGM. Once they reach your watch in the service queue they will determine which repairs are covered under Sinn's warranty.

It is important to note that oil-filled quartz Sinn watches must be repaired in Germany (EZM 2, Hydro and UX series). If your watch meets one of these conditions and requires service under warranty, please contact us and we'll provide instructions for shipping the watch to Sinn in Germany.

WatchBuys Advantage #3

Your watch will be repaired at no cost to you other than shipping charges to either Sinn or RGM during the warranty period. Sinn watches purchased through the "grey market" (non-authorized sources) may carry no warranty from Sinn. Sinn watches purchased through authorized overseas retailers are governed by the warranty policies of those dealers and/or Sinn, and typically must be sent to either the overseas dealer or Germany for repair.

WatchBuys Advantage #4

You'll be wearing your new Sinn watch soon after your order is placed since we stock Sinn watches and ship free using FedEx Air. Plus, since we are located in the United States, there are no "hidden charges" for shipments to US residents as is the case with most overseas dealers. Such charges can add up to 15% to the cost of your new watch, and include credit card surcharges, foreign exchange credit card bank fees, import duties and taxes, and custom's broker charges.

WatchBuys Advantage #5

WatchBuys offers a comprehensive return policy with no restocking fees to US residents. Overseas dealers, including those involved in the grey market, typically don't offer a return policy, and if they do, returning a watch under the policy is both complicated and expensive due to import/export and custom's requirements. Restocking fees are also common and may range up to 15%.

Learn more about our return policies.

WatchBuys Advantage #6

WatchBuys is pleased to accept payments through PayPal, debit and credit cards. We charge no surcharges to use credit or debit cards, and because we are based in the United States your US card is charged in US dollars with no conversion or exchange rate fees.

We also accept payments from PayPal and charge no surcharges.

Please note that to pay by credit card, debit card or PayPal your account and/or card must be issued by US or Canadian financial institution and billed to a confirmed US or Canadian address.

WatchBuys Advantage #7

When you purchase your new Sinn watch from WatchBuys, you'll earn WatchPoint Rewards which accumulate and may be redeemed against future purchases.

Sinn watches feature a number of cutting edge technologies, many of which are unique to Sinn. Please note that not all Sinn watches, including the watch on this page, use all of these Sinn technologies.

Among the more notable Sinn technologies are:

Tegimented Hardened Cases

Many Sinn watches are fitted with Tegimented cases produced in-house by Sinn's case making affiliated company in Glashutte, Germany.

Standard steel used by most watch companies has a hardness of between 200 and 240 HV (Hardness Vickers is a common scale used to measure material hardness). The Tegiment process produces a hardness of at least 1,200 Vickers which is five times harder than standard steel (and on some Sinn models up to nine times harder than standard steel).

The Tegiment process is not a coating consisting of a foreign material; instead the steel itself that has been hardened using a special engineering process that creates a hardened barrier. The base material is a type of stainless steel also used for surgical implants, and the stainless steel resistance to corrosion is further improved by the Tegiment hardening process.

The primary advantages to a Tegimented case are extreme resistance to scratches and other case abrasions, as well as increased resistance to corrosion.

Please note that certain Sinn watches are fully Tegimented (case, bezel) while others are Tegimented only on the bezel. Use the links below to view both categories.

  • View Sinn watches with fully Tegimented cases.

  • View Sinn watches with Tegimented bezels only.

Dehumidification Technology

A number of Sinn models feature cases filled with inert gas. Sinn has found that filling the case with inert gas can help prevent the introduction of moisture and humidity to the case, as well as provide a more stable environment for the oils that lubricate the movement.

The proper care of any mechanical watch movement mandates that these oils maintain both their viscosity and lubrication properties.

  • View Sinn watches with dehumidification technology.

Copper Sulphate Capsules

A number Sinn models use one or more copper sulphate capsules to absorb humidity trapped inside the case. Over time these capsules will gradually turn dark blue indicating that humidity has been absorbed.

The primary benefit to these copper sulphate capsules is a more dry and stable environment for both the movement and the lubricating oils. Together with Sinn's inert gas treatment these capsules form the basis of Sinn's Dry Hold Technology.

This technology not only provides a more stable environment for the movement, but also prevents fogging of the crystal when going from hot to cold environments or from humid to non-humid conditions (such air conditioned buildings).

  • View Sinn watches with copper sulphate capsules.

Extreme Antimagnetic Protection

Magnetism can cause dramatic swings in the timekeeping of a mechanical watch movement. People are often exposed to magnetic fields without even being aware - frequent high altitude flying, metal detectors, audio and video equipment, medical equipment and computer equipment can all cause problems with magnetism.

Many Sinn watches offer extreme protection against magnetism up to 80,000 A/m. Sinn achieves these results using a number of different technologies, including special case and case back construction, soft iron components in the case and protective rings surrounding the movement.

  • View Sinn watches with extreme antimagnetic protection.

DIAPAL Oil Free Escapement

Sinn caused quite a stir when they first released their DIAPAL technology. Beginning in 1995, Sinn began work to create an oil free escapement. With any mechanical watch movement, the aging of oil, especially in the escapement can create long term problems for that movement. Additionally, as movement oil ages, required service intervals become more frequent.

Sinn's early analysis to this problem provided a quick solution (at least in theory) - if you don't use oil, it can't age. The process began by exchanging the ruby escapements for diamonds (the word "DIAPAL" derives from the German name for diamond escapements) in order to achieve the desired effect. The designation stuck, even though today Sinn works with solutions taken from advanced nanotechnology rather than diamonds.

The result is a movement that proves so reliable that Sinn offers an unprecedented five year warranty on their DIAPAL watches.

  • View Sinn watches featuring the DIAPAL oil free escapement.

Hydro Oil Filled Technology

Sinn has developed a technology termed "Hydro" in which the entire watch case is filled with oil. Watches using this technology are based on quartz rather than mechanical movements.

By using this type of movement, Sinn is able to fill the watch with oil, which has the joint affect of greatly enhancing the readability of the dial and time from any angle (including under water), and increasing the water resistance of the watch even at great depths.

  • View Sinn watches with Hydro Oil Filled technology.

Submarine Steel

Sinn has created a line of watches featuring cases made from German submarine steel (the U Series). The steel was procured by Sinn from a steel supplier to Emden GmbH, one of Germany's North Sea shipbuilding yards who construct submarines from the very same steel.

Because of the special steel used from the submarine steelmanufacturer, the case resists the effects of exposure to salt waterand salt water environments.

These cases are produced in-house by Sinn's case making affiliated company in Glashutte, Germany.

This special steel is also amagnetic which means that is does not have magnetic properties and cannot itself become magnetized. The watch movement itself is protected from magnetic fields up to 4,800 A/m.

  • View Sinn watches built from German submarine steel.

EZM Mission Timers

Sinn is a partner for manufacturing watches for the German Special Forces, including SWAT, Customs, FBI, helicopter police, GSG9 and other units.

Beginning with the now highly collectible (and valuable) Sinn EZM 1, Sinn has grown this collection to some of the most durable and highly functional watches made and they remain among the most popular in the collection.

  • View Sinn watches in the EZM Series.

TESTAF Certified Pilot's Watches

Lothar Schmidt, Sinn's CEO and owner had long been disturbed by a lack of technical standards for defining a "pilot's watch". As an engineer, Mr. Schmidt was fluent in standards for diver's watches, anti-magnetic watches and the many other technological standards used to manufacture watches.

A widely used reference for standards is DIN, or the Deutsches Institut fr Normung (German Institute for Standardization). Oddly, he discovered there were no DIN standards to cover pilot's watches where such standards existed for example for diver's watches.

The new "Technical Standard for Pilot's Watches" (TESTAF) was developed by the Aachen University of Applied Sciences and establishes the suitability for professional use as a pilot's watch.

  • View Sinn watches in the TESTAF Series


Watch Reviews From Verified WatchBuys Buyers
85.7% • Verified Buyer Reviews85.7% • Verified Buyer Reviews (7 reviews)

Great dive and chrono watch

"Great dive and chrono watch"

Verified Owner Comments: It is really nice to have a 60 minute chronograph dive watch. The tool watch aesthetics of the watch grow on you and the watch with the rubber strap is very comfortable to wear. At a diameter of 41.5 mm, the watch is not overly large nor thick.

EZM13 on Rubber Strap

"EZM13 on Rubber Strap"

Verified Owner Comments: Humble opinions of my received EZM13: -Rotating matte bezel has 60 stiff clicks, a grippy coin edge, pip perfectly aligns on central minute markers, satin finish on bezel insert. -Bead blasted bezel, case, pushers, crown have a slightly warmer tone than brushed stainless steel.  Strong lume on central hour markers, and central hour, minute, and sub-dial second hands. -Chronograph central second hand resets to perfectly align with center of 12h marker, 60m sub-dial minute hand resets to perfectly align to center of 60m sub-dial marker and also aligns directly on each sub-dial minute markers as minutes elapse. -Double AR greatly reduces reflections even in bright, direct sunlight, also produces a very slight warm tone to the dial.  Pushers and signed crown have precise actions. The dial seems less busy when viewing the watch in person, compared to video and pictures. -Rubber strap is very soft and comfortable, signed buckle, holes closely spaced for fine adjustability, col... - more details

The Porsche of Wristwatches

"The Porsche of Wristwatches"

Verified Owner Comments: This is my second Sinn from Watchbuys. It doesn't disappoint. It has a very solid feel and the look is somewhat minimalist. It reminds me of my 1987 Porsche 911. It's all business. The ONLY downside is the red date which is unreadable in low light and the fact that the pusher position functions are counter to what one would usually expect—the bottom pusher starts the chrono while the upper does the reset. Note that the rubber strap must be cut to size the watch.

This watch will not attract attention which may be a good thing. This is a very solid piece of kit.

World Class

"World Class"

Verified Owner Comments: World class product and service. This watch is a dive, pilot, chronograph in one package. There is nothing to dislike.

Sinn watch

"Sinn watch"

Verified Owner Comments: I absolutely love this watch!! I had never seen it in person, but had read quite a bit about Sinn watches, and at least visually, liked this one best. I could not be happier with my purchase. It looks great! The silicone strap is extremely comfortable and well made. Even though the watch has some heft to it, you do not feel it when it's on your wrist. If you like the looks of the watch, take the plunge! You won't be disappointed.

Handsome and Smart

"Handsome and Smart"

Verified Owner Comments: The EZM 13 is one handsome watch! It''s common to hear this about a piece, but it looks much better in person than it does in photos. The way the proportions of the 41.5mm case and the layout of the dial work together make the whole watch appear smaller, therefore more wearable. It sits high, but that''s come to be expected with an automatic chronograph. It''s noticeable when wrapped around your wrist, but never overbearing. The "destro" layout of the crown and pushers also prevents any uncomfortable rubbing to the back of your hand, making it a joy to wear. To gush a little more, whoever designed the dial is genius! Try this: squint your eyes a little and watch as all the secondary information on the dial vanishes (e.g. the running seconds, date, icons). What you''re left with is the central minute and hour hands, as well as the chronograph seconds hand and 60-minute subdial. The emphasis on "at-a-glance" legibility drives the functionality of this watch. It''s embarrassing when s... - more details

Customer Service

"Customer Service"

Verified Owner Comments: The staff is top notch, they will spend as much time as needed on the phone or email to help you throughout the purchase process.