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BWC SWISS
Watch Winding Specifications

The Swiss manufacturer BWC (Buttes Watch Co.) was founded in 1924 by Arthur Chalet in Buttes (Canton Neuchâtel). It is known for producing inexpensive mechanical and Quartz watches with solid quality. At that time the focus was still on the production of pocket watches. In 1953 the father of the founder, Edwin Volkart, took over the company. Since 2003 BWC is owned by the Pforzheim company Starck-Uhren, and since 2004 watches are manufactured with a new concept in Biel and Pforzheim.

MODEL, DESCRIPTION MOVEMENT / CALIBER WINDING DIRECTION TURNS PER DAY (TPD)
Automatik Chronograph: 20008, 20012, 20023, 20769, 20771 Valjoux 7750 CW 800
Automatik Chronograph Galilei: 20026 Valjoux 7750 or 7751 CW 800
Automatik Zeitschreiber: 20029 Valjoux 7750 or 7751 CW 800
Automatik "Classico": 21062 ETA 2824-2 Both 650
Black Performance Automatic ETA 2824-2 Both 650
Black Performance II Valjoux 7750 CW 800
Chronograph C-Type: 20011 Valjoux 7750 CW 800
Classic Automatic: 20015 ETA 2892-A2 Both 650
Classic Performance, Classic Performance II Valjoux 7750 CW 800
Classic Performance Automatic ETA 2834-2 Both 650
Elegante Automatic: 20004 ETA 2824-2 Both 650
Open Heart Automatic: 20764 ETA 2824-2 Both 650
Pilot Automatic Chronograph: 20050 Valjoux 7750 CW 800
Power Performance Valjoux 7750 CW 800
Power Performance Automatic ETA 2824-2 Both 650
Retro Bonnie ETA 2671 Both 650
Retro Clyde ETA 2824-2 Both 650
Skeleton Automatic: 20768 ETA 2824-2 Both 650
Square Automatic: 20043 ETA 2824-2 Both 650
Square Chronograph: 20044 Valjoux 7750 CW 800
Tee Diver Automatic: 21069 ETA 2824-2 Both 650
Tonneau Automatic: 20738 ETA 2824-2 Both 650
XXL Pilot Chronograph 47mm: 20002, 20011, 20030 Valjoux 7750 CW 800
XXL Pilot Watch: 20013, 20014 ETA 2824 Both 650
Swiss 20044 Square Both 650
Swiss 20044 Square Chrono CW 800

If ever you are unable to find your watch model in this table, here's an easy way to determine the winding requirements for your BWC SWISS watches.

  • Select the combined winding mode (CW+CCW) and the minimal number of turns per day (TPD).
  • Place your watch into the winder and check after a few days how accurate your watch shows the time.
  • If it runs behind, it is necessary to increase the number of TPD by one increment.

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