Side by side

Marathon Steel Navigator SSNAV QuartzvsSeiko Prospex SPEEDTIMER

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

Steel Navigator SSNAV Quartz
MarathonSteel Navigator SSNAV Quartz
MSRP $1,000
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000

At a glance

14 of 29 specs differ
Diameter
Steel Navigator SSNAV Quartz41mm
Prospex SPEEDTIMER42.5mm
Power Reserve
Steel Navigator SSNAV Quartz40h
Prospex SPEEDTIMER45h
Water Resistance
Steel Navigator SSNAV Quartz60m
Prospex SPEEDTIMER100m
MSRP
Steel Navigator SSNAV Quartz$1,000
Prospex SPEEDTIMER$3,000

Full specifications

Case

6 specs
Category
Pilot
Chronograph
Diameter
41mm
42.5mm
Thickness
11mm
15.1mm
Lug-to-Lug
48mm
50mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Swiss High-Torque Quartz
8R46
Type
Quartz
Automatic
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$1,000
$3,000

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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.

Marathon Steel Navigator SSNAV Quartz

The Marathon Steel Navigator SSNAV Quartz is widely praised for its highly accurate Swiss Made ETA F06.412 PreciDrive movement, with stated accuracy of ±10 seconds per year, and its constant low-light visibility from self-illuminating tritium tubes. Owners find the watch comfortable and impressive, noting its 41mm sandblasted steel case with an asymmetrical design, bi-directional GMT bezel with excellent action, sapphire crystal, and 100m water resistance with a screw-down crown. On balance, owners and reviewers rate the Marathon Steel Navigator SSNAV Quartz highly for its robust tool watch design and exceptional accuracy at its price point.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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