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  • 656 S

    The pilot's watch with magnetic field protection.

    656 S
  • 656 S

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Product number: 656.020 PDF

656 S

This model is no longer available in our current collection.
656 S

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 of up to 80,000 A/m) to complement our range of instrumental .


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, on the minute and hour hands and indices to ensure accurate reading even in adverse conditions.

Special characteristics

Technical details

ETA 2824-2
Self-winding mechanism
25 bearing jewels
28,800 semi-oscillations per hour

Shock resistant as per DIN ISO 1413
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 , matte black chrome-plated
glass in front, on both sides
Case back screw-fastened,
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
up to 20

Hours, minutes, seconds
Date display
up to 80,000 A/m
Case diameter: 38,5 mm
Band : 20 mm
Case thickness: 10 mm
Weight without strap: 67 gramme
Matte black dial
Numbers and indices coated with luminescent colour
Hour and minute hand coated with luminescent colour