The BR 05 line is part of Bell & Ross’s “urban” / “instrument-style” collection — combining the brand’s signature square/rounded-square case design (inspired by aircraft cockpit instruments) with a more modern, integrated-strap sports-watch aesthetic. The Chronograph variant adds a stopwatch/elapsed-time function to the base BR 05, giving it more functionality and a sportier, racing-inspired look (especially via its sub-dials). ~42 mm diameter — square-ish stainless-steel case. Stainless steel and 18k Gold Case sapphire exhibition caseback showing the movement rubber strap (matching dial colour) very good clean 21 cm with watch fully.