Side by side

Marathon TSAR (Tritium Search & Rescue) Diver's QuartzvsZelos Spearfish GMT

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

TSAR (Tritium Search & Rescue) Diver's Quartz
MarathonTSAR (Tritium Search & Rescue) Diver's Quartz
MSRP $1,550
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

9 of 29 specs differ
Diameter
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Spearfish GMT40mm
Power Reserve
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Spearfish GMT40h
Water Resistance
TSAR (Tritium Search & Rescue) Diver's Quartz300m
Spearfish GMT200m
MSRP
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550
Spearfish GMT$999

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
46mm
40mm
Thickness
14mm
13mm
Lug-to-Lug
48mm
40mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Black
Frost

Movement

2 specs
Caliber
Swiss High-Torque Quartz
Sellita SW330-2
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$1,550
$999

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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 TSAR (Tritium Search & Rescue) Diver's Quartz

Owners widely praise the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz for its ISO 6425 certification and practical, everyday wearability, with one owner noting the movement sets and ticks fine with expected quartz accuracy. The bezel and crystal are also described as great. One owner reports the 41mm TSAR wears small and has a field watch aesthetic, while another notes the TSAR Medium, listed at 12mm thick, visually appears thicker. Overall, owners rate the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz highly for its robust build and practical design.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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