Part of Breguet's modern Type XXI line, the 3810ST brings the brand's aviation chronograph into a 42.5mm stainless steel case. The gray dial and matching steel bracelet give it a restrained, technical look that fits the model. Its automatic movement combines chronograph timing with a date display, with a clear focus on daily use. At 15mm thick, it has the solid wrist presence you would expect from this kind of flyback-inspired design.