Specialist dealers


  • U2 C

    The mission timer for divers made of German Submarine Steel with Black Hard Coating.

    U2 C
  • U2 C
  • U2 C
  • U2 C
  • U2 C
  • U2 C


Product number: 1020.021 PDF

U2 C

This set includes the following bracelets:
This model is no longer available in our current range.
U2 C

In collaboration with the specialist watch magazine <i>Chronos</i> published by Ebner Verlag, we are presenting a special limited edition of 50 U2 C models in a highly unique, technical and masculine design. 

For example, the mission timer is made of high-strength, seawater-resistant German submarine steel in a unique colour design with anthracite and grey accents. The watch comes with a matching grey-and-black textile strap and an olive-green silicone strap with an expandable folding safety clasp as standard. This allows you to swap and change the strap on this exceptional diver’s watch to suit the occasion or purpose.

The technologies used make the U2 C a robust and accurate instrument for professional diving. For example, Ar-Dehumidifying Technology ensures greater functional reliability and freedom from fogging. Temperature Resistance Technology guarantees the functional reliability of the watch in temperatures ranging from –45°C to +80°C. The surface of the case has also been hardened using TEGIMENT Technology, making it especially scratch-resistant. This TEGIMENT surface provides the base for the high-quality Black Hard Coating (PVD coating). 

The classification company DNV GL has tested the reliability and suitability of the watch for professional use. It verifies and certifies the pressure resistance of the U2 C to a diving depth of 2,000 metres (= 200 bar) and temperature resistance and functionality in accordance with the European diving device standards.

What makes the U2 C of special value to watch lovers is the fact that it is limited to just 50 pieces. The U2 C comes with the aforementioned two straps, a band replacement tool, spare spring bars and a care cloth.

Special characteristics
  • Exclusive special edition for the specialist watch magazine Chronos
  • Limited to 50 pieces
  • Completely made of high-strength seawater-resistant German Submarine Steel
  • Tested based on European diving equipment standards and certified by DNV GL
  • Black Hard Coating on a TEGIMENT Technology basis
  • Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
  • Functionally reliable from –45°C up to +80°C
  • Captive diver's bezel with minute ratcheting
  • Crown at 4 o'clock to prevent pressure on the back of the hand
  • Mission timer design for optimal readability
  • Sapphire crystal glass
  • Pressure-resistant to 2,000 m diving depth (200 bar), certified by DNV GL
  • Low pressure resistant

Technical details

ETA 2892-A2
Self-winding mechanism
21 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 German Submarine Steel, black
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 200 bar, certified by DNV GL
According to the technical demands for the diving norm DIN 8306
Tested based on European diving equipment standards EN 250 / EN14143 and certified by DNV GL
Low pressure resistant
Hours, minutes, seconds
Date display
Diver's bezel with minute ratcheting and luminous key mark
SINN Technologies
Black Hard Coating on a TEGIMENT Technology basis
Captive bezel
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Temperature Resistance Technology, therefore functionally reliable at temperatures from -45°C up to +80°C
Dimensions and Weight
Case diameter: 44 mm
Band lug width: 22 mm
Case thickness: 15.5 mm
Weight without strap: 114 gramme
Dial and Hands
Matte black dial
Indices coated with luminescent colour
Hour, minute and second hand coated with luminescent colour

U2 C configure

Watch strap
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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 U2 C.

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.

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