Side by side

Bremont Altitude ChronographvsMarathon Steel Navigator SSNAV-D Auto

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

Altitude Chronograph
BremontAltitude Chronograph
MSRP $6,300
Steel Navigator SSNAV-D Auto
MarathonSteel Navigator SSNAV-D Auto
MSRP $1,400

At a glance

10 of 29 specs differ
Diameter
Altitude Chronograph42mm
Steel Navigator SSNAV-D Auto41mm
Power Reserve
Altitude Chronograph40h
Steel Navigator SSNAV-D Auto40h
Water Resistance
Altitude Chronograph100m
Steel Navigator SSNAV-D Auto60m
MSRP
Altitude Chronograph$6,300
Steel Navigator SSNAV-D Auto$1,400

Full specifications

Case

7 specs
Category
Chronograph
Pilot
Diameter
42mm
41mm
Thickness
14.7mm
11mm
Lug-to-Lug
48mm
Lug Width
14.7mm
20mm
Material
316L Stainless Steel (DLC coated)
316L Stainless Steel
Water Resistance
100m
60m

Crystal & Dial

1 specs
Dial Color
Silver
Black

Movement

1 specs
Caliber
BE-50AE
Sellita SW220-1

Pricing

1 specs
MSRP
$6,300
$1,400

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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 Chronograph

Owners note faint marks on the case sides and back, with minor wear and creasing on the strap. Reviewers flag the "DANGER EJECTION SEAT" wordmark on the dial as a divisive design choice that disrupts the MB series' usual stark tone, though they praise the improved smoothness and click precision of the Roto Click rotating bezel. On balance, the Bremont Altitude Chronograph elicits mixed reactions, with design elements like the dial text being a point of contention for reviewers.

Marathon Steel Navigator SSNAV-D Auto

The Marathon Steel Navigator SSNAV-D Auto is praised for its durable construction, featuring a sandblasted steel case with improved lugs, a bi-directional bezel with excellent action, and 100m water resistance. Owners appreciate the constant visibility provided by self-illuminating tritium gas tubes and the precision of its ETA F06.412 quartz movement, which offers accuracy to about 10 seconds per year. The watch includes a GMT bezel for dual timekeeping and a synthetic sapphire crystal. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV-D Auto highly for its robust tool-watch design and reliable tritium illumination.

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