CHPTR_Δ.2 [B.ROK]

CHPTR_Δ (Chapter Delta) is the first BA111OD manufacture watch complication, a unique timepiece that represents time in a revolutionary way. Developed with renowned watchmaker Olivier Mory, it introduces an entirely new approach to time display. Instead of simply rotating a hand around a central axis, the movement was conceived to roll a satellite hour wheel around a fixed central hour wheel. This creates a deltoid trajectory, meaning the tip of the hour hand traces a triangle, a world premiere in watchmaking. With its asymmetrical reading of time, CHPTR_Δ challenges convention and offers a bold new way to experience horology. Presented here in a black execution, this version reveals the most graphic and assertive expression of the concept, highlighting its architectural design, depth and singular identity. MOVEMENT Automatic Swiss Made movement enhanced with BA111OD manufacture module 09310 with hypocycloidal time reading (base: Soprod M100) POWER RESERVE 42 hours CASE Stainless steel 316L anti-allergic, 44mm Transparent caseback, thickness 12.9mm including glass, lug-to-lug measurement 46mm. DIAL Satin matte steel with multiple levels and laser engraving Faceted triangle in polished steel, red dot GLASS Domed sapphire crystal with antireflection treatment CROWN At 4 o'clock, engraved with the BA111OD emblem FUNCTIONS Hour-Minute, date at 2 o’clock WATER RESISTANCE 5 ATM STRAP Rubber strap with deployant clasp Easy strap exchange system