Brand:Kelek Model: chronograph Caliber: 1369 Case material:stainless steel Case size: 35 mm excluding crown Case size:from lugs to lugs 45 mm Glass: mineral cristal Bracelet: Stainless steel 22-23 cm Condition: very good In 1973, the Valjoux 7750 was launched which became one of the most used chronograph movements. Four years after, the automatic chronograph pioneers El Primero, Cal. 11 and Seiko 6139 were launched. In addition, another automatic chronograph caliber was presented by a consortium constituted by Tenor Dorly, Brac and Kelek in collaboration with Dubois Depraz who developed the chronograph module. The initials TDBK represent the four companies that were involved in its development. Tenor-Dorly, Dubois-Depraz, Brac and Kelek. The base caliber an automatic with date was developed by Brac and Tenor-Dorly, the chronograph module was subsequently added by chronograph specialist Dubois-Depraz, and Kelek were responsible for the production. Gift box Will ship insured and register