Chapter 4 GMT Tourbillon Limited Edition — Chapter 4.18

Chapter 4 GMT Tourbillon Limited Edition, model code Chapter 4.18, is the exact 2025 BA111OD release documented by the manufacturer, with its BA.01 movement, 44 mm grade 5 titanium with 5n pvd treatment case, exact dial architecture and all officially offered attachment configurations.

Open in The Dial Atlas