BA111OD CHPTR_Δ.1vsBA111OD CHPTR_Δ.8
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
CHPTR_Δ.1
CHPTR_Δ.8
Diameter
44mm
40mm
Lug-to-Lug
46mm
n/a
Thickness
12.9mm
n/a
Water Resistance
50m
50m
Power Reserve
42h
42h
MSRP
$4,100
$4,100
Movement
Soprod M100
Soprod M100
Case
3 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
BA111OD CHPTR_Δ.1 is widely praised for its unique time display and exceptional value, offering a Swiss-made luxury watch experience for under €3,000. Reviewers highlight its captivating architectural dial with a satellite dot hour indicator and a complex module based on the Soprod M100 movement. The 44mm stainless steel case is noted for its wrist-friendly short lugs, though some owners find BA111OD watches to be quite large. On balance, owners and reviewers rate the BA111OD CHPTR_Δ.1 highly for its avant-garde design and impressive watchmaking at its price point.
The BA111OD CHPTR_Δ.8 is widely praised for its avant-garde design and exceptional value, with owners noting its ability to deliver a luxury experience at a competitive price. Its unique hypocycloidal time display, developed with Olivier Mory and utilizing an in-house module based on the Soprod M100 movement, is a significant draw. Reviewers highlight the modern sector dial and the technically complex Swiss luxury watch offering for under €3,000. Some find the 41mm case and 12.75mm thickness larger than expected for a dress-style watch. Overall, owners and reviewers rate the BA111OD CHPTR_Δ.8 highly for its innovative time display and remarkable value proposition.
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