Specialist dealers


  • EZM 1

    The mission timer for special units.

    EZM 1


Product number: 503.010 PDF


This model is no longer available in our current range.

Even the very first Sinn watches, from the beginning of the 1960s, were famously designed for extraordinary types of usage. The development of mission timers is every bit as extraordinary. Originally designed for people for whom precise, quick time measurement can mean the difference between life and death – for special units in the police and Federal Border Guard. Mission timers have been reduced to an absolute minimum, ensuring optimum readability and perfect time measurement. 

One unique feature catches the eye right away – the screw-fastened crown of the EZM 1 lies on the side of the solid pure titanium case facing away from the wrist. The protected push-pieces are ideally positioned so they can be started and stopped using your right thumb. We also came up with an innovative solution for the inner mechanisms of the EZM 1 to respond to the challenges at hand. To ensure the reliable function of the time display under even the most extreme conditions, we use SINN special oil as well as components individually selected according to their tolerances. This ensures the reliable function of the EZM 1 in conditions ranging from –20°C to +70°C. A safety bonus that can make all the difference.

Special characteristics
  • Case made of titanium, bead-blasted
  • 60-minute stop function from the dial centre
  • Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
  • Functionally reliable from –20°C up to +70°C
  • Sapphire crystal glass
  • Case back made of titanium, Nickel-free
  • Crown on the left side of the case to prevent pressure on the back of the hand
  • Pilot's bezel with minute ratcheting
  • Mission timer design for optimal readability
  • Pressure-resistant to 30 bar
  • Low pressure resistant

Technical details

Lemania 5100
Self-winding mechanism
17 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309

The information on the mechanical movement corresponds to the current production situation in Frankfurt am Main. Due to technical changes, it may happen in individual cases that stock items of our sales partners deviate from this information.

Case made of titanium, bead-blasted
Case back made of titanium, Nickel-free
Sapphire crystal glass in front
Case back screw-fastened
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 30 bar
Low pressure resistant
Hours, minutes, seconds
Date display
Chronograph with centred 60-minute stopwatch hand
Pilot’s bezel with luminous key mark
SINN Technologies
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Temperature resistance technology, therefore functionally reliable at temperatures from –20°C up to +70°C
Dimensions and Weight
Case diameter: 40 mm
Band lug width: 20 mm
Case thickness: 16 mm
Weight without strap: 61 gramme
Dial and Hands
Mission timer design for optimal readability

EZM 1 configure

Watch strap
Add to shopping cart

Sinn Spezialuhren

zu Frankfurt am Main

0% 12% 47% 76% 100%

Select your country and language

Warranty statement

In addition to the statutory warranty, we – Sinn Spezialuhren GmbH, Wilhelm-Fay-Strasse 21, 65936 Frankfurt am Main – provide a manufacturer’s warranty against material and manufacturing defects for the watch EZM 1.

The warranty period is leer years.

The warranty period is calculated from the invoice date.

Our warranty is applicable worldwide.

If you wish to make a warranty claim, we will repair the watch for you at no additional cost.

Warranty claims are excluded in the event of damage caused by:

  • Improper use
  • Repairs or attempted repairs which were not carried out by us or our authorised partners. A list of authorised partners can be found in the Sales and Service Partners menu on our website
  • Signs of wear and tear, especially to straps
  • The use of force (blows, knocks, impact)

Please inform us – Sinn Spezialuhren GmbH by phone +49 (0) 69/97 84 14-400 or email – as soon as you are aware of the potential warranty claim to avoid further damage. In order to approve the warranty, we will need the watch and proof of purchase (invoice) with a detailed description of the damage.

In the event of a warranty claim, we bear the costs of sending and returning the watch as well as the transport risk, provided that the transport is carried out by the transport company specified by us and the watch has been securely packaged. Please contact us by phone +49 (0) 69/97 84 14-400 or email Otherwise, as the customer, you will bear the costs of the shipment and the transport risk.

Any costs incurred for customs duties, import duties and other fees incurred when the watch is returned to the recipient country must be borne by the recipient.

We provide this warranty in addition to your existing statutory rights for defects. These rights are not restricted by the warranty and they can be exercised free of charge.

Do you want to configure your 503.010

0,00 incl. VAT
Configure watch