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  • 303

    The driver's chronograph.

    303
  • 303
  • 303
  • 303

Documents

Product number: 303.010 PDF

303

This model is no longer available in our current collection.
303

In the early days of motor sports, the speed of racing cars was customarily determined in a stylish manner: when a milestone was passed, the second hand of the chronograph movement was switched on. When the driver passed the next milestone, the second hand was stopped, and the speed in kilometers per hour was read out from the tachymeter scale of the watch.


Our 303 series with tachymeter scale is charmingly reminiscent of past times in precisely this fashion, but is utterly contemporary as well. Thus you can precisely measure speeds between a moderate 60 km / h and a breathtaking 500 km / h accurately at any time using the method described above.

Special characteristics
  • Case made of stainless steel, polished
  • Tachymeter scale
  • Sapphire crystal glass
  • Solid case back (transparent case back made of sapphire crystal optional)
  • Pressure-resistant to 20 bar (= 200 m water depth)
  • Low pressure resistant

Technical details

Valjoux 7750
Self-winding mechanism
25 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 stainless steel, polished/satinized
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 20 bar (= 200 m water depth)
Low pressure resistant
Hours, minutes, subsidiary seconds
Date display
Day of the week display
Chronograph
Tachymeter / Pulsometer scale
Case diameter: 41 mm
Band lug width: 20 mm
Case thickness: 15,5 mm
Weight without strap: 90 gramme
Matte black dial
Indices coated with luminescent colour
Hour and minute hand coated with luminescent colour