CHPTR_Δ.8 [KAIROS]

CHPTR_Δ 40mm KAIROS (Chapter Delta) is a more compact expression of BA111OD’s first 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 while offering a more compact and versatile presence on the wrist.

This grey execution brings a vibrant and contemporary dimension to the concept, highlighting its architectural design and distinctive mechanical expression in a refined 40mm format.

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, 40mm
Transparent caseback

DIAL
Satin matte steel with multiple levels and laser engraving
Faceted triangle in polished steel, blue 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 deployant clasp
Stainless steel bracelet with deployant clasp
Easy-clip system