Side by side

Bremont Altitude Perpetual Calendar GMTvsMarathon GSAR (Government Search & Rescue) Diver's 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
GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100

At a glance

10 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
GSAR (Government Search & Rescue) Diver's Automatic41mm
Power Reserve
Altitude Perpetual Calendar GMT40h
GSAR (Government Search & Rescue) Diver's Automatic40h
Water Resistance
Altitude Perpetual Calendar GMT
GSAR (Government Search & Rescue) Diver's Automatic300m
MSRP
Altitude Perpetual Calendar GMT$38,450
GSAR (Government Search & Rescue) Diver's Automatic$2,100

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
42mm
41mm
Thickness
12.65mm
14mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
300m

Crystal & Dial

1 specs
Dial Color
Blue
Anthracite

Movement

1 specs
Caliber
Sellita SW200-1

Pricing

1 specs
MSRP
$38,450
$2,100

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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.

Marathon GSAR (Government Search & Rescue) Diver's Automatic

The Marathon GSAR (Government Search & Rescue) Diver's Automatic is widely praised for its legibility, comfort, and exceptional tritium illumination, with reviewers highlighting its utilitarian, military-equipment feel and a 41mm case size considered ideal. Owners appreciate its grippy bezel and the 300 meters of water resistance provided by the screw-down crown, deeming it a solid value for a Swiss-made tool watch. Some owners report quality control issues, with one user needing to warranty two watches, and another notes the GSAR wears taller than other models, leading to occasional bumping. The reliable ETA 2824-A2 movement is a consistent feature. Overall, owners and reviewers rate the Marathon GSAR (Government Search & Rescue) Diver's Automatic highly for its bright tritium lume and robust, no-nonsense tool watch design.

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