Side by side

Bremont Altitude Perpetual Calendar GMTvsSpinnaker Dumas Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

8 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Dumas Automatic44mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Dumas Automatic40h
Water Resistance
Altitude Perpetual Calendar GMT
Dumas Automatic300m
MSRP
Altitude Perpetual Calendar GMT$38,450
Dumas Automatic$239

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
42mm
44mm
Thickness
12.65mm
15mm
Lug-to-Lug
48mm
Material
Titanium
316L Stainless Steel
Water Resistance
300m

Movement

1 specs
Caliber
SII NH35A

Pricing

1 specs
MSRP
$38,450
$239

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What people say

Owners + reviewers, side by side

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

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

Spinnaker Dumas Automatic

Owners widely praise the Spinnaker Dumas Automatic for its attractive textured blue dial, applied indices, and well-finished case, noting its comfortable wearability due to a short lug-to-lug distance. Some owners flag the use of mineral crystal instead of sapphire and a bracelet with a learning curve and loose keeper. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetics and case finishing at its price point.

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