Limited Edition to 111 pieces 

BA111OD collaborates with Label Noir to introduce the CHPTR_Δ.5 Label Noir Limited Edition, limited to 111 numbered pieces. This exclusive timepiece features a deep black design with glossy and matte finishes, highlighted by vibrant green accents. The unique display combines circular minutes with hypocycloidal hours, transforming time reading into a choreographic experience.

Thomas Baillod, founder of BA111OD, praises the collaboration: "Emmanuel Curti's innovative approach aligns with our vision of horology, resulting in a truly unique watch." This exclusive series is set to captivate watch enthusiasts with its bold design.

Rather than simply rotating a hand around a central axis, the movement was designed to "roll" a satellite hour wheel around a fixed central hour wheel. When a wheel is rotated around another wheel, the trajectory described by any point on this satellite wheel is a cycloid. There are several types of cycloids: in this BA111OD chapter, the chosen cycloid is a deltoid (with a ratio of 1/3), and as a result, the trajectory described by the tip of the hour hand is... a triangle.

List of compatible watchbands : Bracelets – BA111OD