Dubois Dépraz 3163

The 3163 is a complication module manufactured by Dubois Dépraz, a Swiss company specializing in add-on calendar modules. It provides a pointer date function and small seconds sub-dial. The module measures 5.20mm in total thickness, with the module itself at 1.60mm, and is designed for a 30mm case diameter. Dubois Dépraz has supplied these modules to various watchmakers for decades as an elegant solution for adding date complications to existing base movements.