Technical Data and Details

Further background information can be found at All About the Brand and the Watch


7-piece, 41.4 mm diameter, 13.65 mm height, stainless steel (316 L), optionally brushed or satined and PVD-blackened or polished stainless steel, 2 flat, single-sided multiple non-reflective sapphire crystals, case middle with inverted fluting (recessed fluting); case is double stepped towards the middle, then tapers; vertical inner bezel.


2.5 mm wide, fully threaded, sapphire crystal with anti-reflective coating on one side.


9 mm diameter, with fine knurling, robust crown tube and ornamental screw.


5.1 mm in diameter, slightly convex pusher surfaces.


Indented glass base with anti-reflective sapphire crystal on one side, 6 threaded screws, engraved with `René Kriegbaum, Column Wheel Chronograph, Stainless Steel, 3 ATM Water Resistant', and a serial number.

Lugs (horns)

2.8 mm diameter, with a round cross-section, hemispherical rounded at the end, for 22 mm straps.


3 atmospheres (i.e., the watch is splash-proof).


  • • Matte off-white, matte black, black with silver-coloured sub-dials, grainy silver-plating, matte yellow, hand-guilloched or hand-engraved silver dial upon request.
  • • Inindices, numerals, sub-dial surrounds and font printed in black or white.
  • • Recessed, finely turned sub-dials for small seconds at "9".
  • • 30-minute counter at "3" and 12-hour counter at "6".
  • • Rotating hour and minute indices with 1/5-second (equates to 18000 A/h).


3 skeletonized (except stop hand) steel hands, polished and flame-blued or rhodium plated or white painted hands.


Valjoux 72 (built 1938-1974) and Valjoux 724 (with wheel set and balance for 18000 A/h)


29.5 mm diameter (13 lines), 6.95 mm in height.


Hour, minute and small seconds (at "9"). Chronograph with 2 push buttons for start/stop/reset, stop seconds from the centre, 30-minute counter at "9" and 12-hour counter at "6".

Technical features

18000 A/h, Swiss lever escapement, flat spiral (Valjoux 72) and Breguet spiral(Valjoux 724), large balance ring (optional screw balance), 21 jewels (extended by 2 ruby bearings), Incabloc shock absorber, control wheel with 9 columns and horizontal coupling, regulator arm (Valjoux 724, swan neck regulator on request) or regulator and falling regulation (Valjoux 72).


  • • Plates, mainspring barrel and mechanism bridge as well as combined bridge, blasted with polished edges and gold or rhodium plated.
  • • Steel parts (levers, springs, upper side of the columns of the column wheel, regulators, etc.) are chamfered freehand (if possible) and flat polished.
  • • Screws flat polished and flame-blued on request (no extra charge).
  • • Hand crafted, flat polished and bevelled black swan neck regulator (optional for Valjoux 724).
  • • Chronograph bridge, balance and pallet cocks, and part of the coupling are hand-engraved and rhodium plated (complete movement engraving on request).
  • • Tapered screw holes are enlarged and polished.

Weight (with leather strap and buckle) approx. 90g.