Side by side

CWC T20 General Service Quartz WatchvsMarathon Steel Navigator SSNAV Auto

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

T20 General Service Quartz Watch
CWCT20 General Service Quartz Watch
MSRP $249
Steel Navigator SSNAV Auto
MarathonSteel Navigator SSNAV Auto
MSRP $1,300

At a glance

13 of 29 specs differ
Diameter
T20 General Service Quartz Watch38mm
Steel Navigator SSNAV Auto41mm
Power Reserve
T20 General Service Quartz Watch40h
Steel Navigator SSNAV Auto40h
Water Resistance
T20 General Service Quartz Watch50m
Steel Navigator SSNAV Auto60m
MSRP
T20 General Service Quartz Watch$249
Steel Navigator SSNAV Auto$1,300

Full specifications

Case

7 specs
Category
Field
Pilot
Diameter
38mm
41mm
Thickness
12mm
11.5mm
Lug-to-Lug
42mm
48mm
Lug Width
18.5mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
60m

Crystal & Dial

3 specs
Crystal
Acrylic
Sapphire
Dial Color
CWC T20 General Service Quartz Watch
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Ronda 515
Sellita SW200-1
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$249
$1,300

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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.

CWC T20 General Service Quartz Watch

The CWC T20 General Service Quartz Watch is widely praised for its simple, clean, and classic look, with owners considering it a classy and comfortable field watch. Its 38mm tonneau case is seen by some as a cool retro piece representative of original MOD specifications, though others find this size too small for larger wrists. The watch is noted for keeping accurate time, with one owner reporting it as practical for everyday wear. It features a stainless steel case, sapphire crystal, and a Ronda 715 movement. A limitation mentioned is the fixed lugs, which restrict strap versatility. Overall, owners rate the CWC T20 General Service Quartz Watch highly for its classic military-inspired aesthetic and reliable timekeeping at an affordable price.

Marathon Steel Navigator SSNAV Auto

The Marathon Steel Navigator SSNAV Auto is praised for its high-accuracy quartz movement, with owners noting its comfort and reliable performance. Reviewers highlight its functional tool-watch appeal, featuring a sandblasted steel case, tritium tubes for constant low-light visibility, and 100-meter water resistance. One owner finds the 41mm case runs a bit small. The Marathon Steel Navigator SSNAV Auto utilizes an ETA F06.412 quartz movement with a claimed accuracy of +/- 10 seconds per year and includes a GMT bidirectional bezel. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV Auto highly for its comfortable wear and dependable, high-accuracy quartz movement.

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