This autumn, BA111OD returns with a fresh take on one of its signature creations: the Chapter 4 GMT Tourbillon Limited Edition 2025. The first series sold out swiftly among collectors, and this follow-up arrives in just 30 numbered pieces, a run designed to satisfy enthusiasts who value rarity and mechanical intrigue. The watch is housed in a 44mm grade 5 titanium case with a 5N PVD finish, giving it the warmth of gold and the resilience of titanium. At 7 o’clock sits the tourbillon, while the GMT counter with engraved world map occupies 1 o’clock. True to BA111OD’s design language, the crown remains at 4 o’clock, a detail that underscores the brand’s distinctive approach. Power comes from a hand-wound caliber developed in La Chaux-de-Fonds by Olivier Mory, offering 100 hours of autonomy and the ability to track half-hour offset zones. A nubuck leather strap adds texture and tactility, softening the watch’s technical edge. At the heart of the piece is the tourbillon itself, the 1801 Breguet invention still regarded as one of watchmaking’s most prestigious complications, compensating for gravitational effects while serving as a hypnotic focal point on the dial.