Bell & Ross BR-CAL.313

BR-CAL.313 is an automatic chronograph movement manufactured by Bell & Ross. It is based on the widely used ETA 7750 and belongs to the brand's BR-CAL caliber family. As a non-in-house movement, it reflects Bell & Ross's reliance on established Swiss ébauches for its chronograph complications. The caliber remains in production and continues to power several of the brand's instrument-style chronograph watches.