F.P.Journe Chronomètre SouverainvsMassena LAB Geometer

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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.

F.P.Journe Chronomètre Souverain at true scale

Chronomètre Souverain

Massena LAB Geometer at true scale

Geometer

Diameter

40mm

39mm

Thickness

8mm

lowest

9mm

Water Resistance

n/a

50m

Power Reserve

n/a

58h

MSRP

n/a

$3,495

Movement

Caliber 1304

Sellita SW510

Case

5 specs
Diameter
40mm
39mm
Thickness
8mm
9mm
Lug-to-Lug
n/a
n/a
Material
Platinum
Stainless Steel
Water Resistance
n/a
50m

Crystal & Dial

5 specs
Crystal
n/a
Acrylic
Crystal Shape
n/a
Domed
AR Coating
n/a
No
Dial Color
n/a
Brown
Lume
None
Cream

Movement

3 specs
Caliber
Caliber 1304
Sellita SW510
Power Reserve
0h
58h
Jewels
0
23

Pricing

1 specs
MSRP
n/a
$3,495
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

F.P.Journe Chronomètre Souverain

Owners and reviewers praise the F.P.Journe Chronomètre Souverain for its elegant, thin 40mm case and its technically interesting, gold-plated manual-wind Caliber 1304 movement. The dial's non-symmetrical display, featuring small seconds and a unique backward-moving power reserve indicator, is a highlight, as is the watch's chronometric performance. Some observers prefer platinum over red gold for the Havana dial variant, and one reviewer notes that finishing is not considered the absolute highest-end, though wearability and innovative movement design are consistently lauded. Overall, owners and reviewers rate the F.P.Journe Chronomètre Souverain highly for its discreet elegance and focus on chronometric performance.

Massena LAB Geometer

The Massena LAB Geometer is lauded for its clever reimagining of a mid-1950s chronograph, featuring a striking dial and distinctive hands, though some find these hands slightly challenging to differentiate. Owners widely appreciate the smooth winding action of the manual-wind Sellita SW510 movement housed within its 39mm polished stainless steel case. One owner finds the dial too busy with multiple rings and questions the value proposition for a microbrand utilizing an off-the-shelf movement at its price point. Overall, owners and reviewers rate the Massena LAB Geometer highly for its vintage-inspired design and enjoyable manual-winding experience.