Side by side

Bremont Altitude Perpetual Calendar GMTvsSpinnaker Bradner GMT

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
Bradner GMT
SpinnakerBradner GMT
MSRP $299

At a glance

7 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Bradner GMT42mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Bradner GMT40h
Water Resistance
Altitude Perpetual Calendar GMT
Bradner GMT180m
MSRP
Altitude Perpetual Calendar GMT$38,450
Bradner GMT$299

Full specifications

Case

4 specs
Thickness
12.65mm
15mm
Lug-to-Lug
50mm
Material
Titanium
316L Stainless Steel
Water Resistance
180m

Crystal & Dial

1 specs
Dial Color
Blue
Brown

Movement

1 specs
Caliber
Seiko NH34A

Pricing

1 specs
MSRP
$38,450
$299

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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 Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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