Side by side

Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsTudor 1926 Luna

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

GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100
1926 Luna
Tudor1926 Luna
MSRP $3,000

At a glance

20 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
1926 Luna39mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
1926 Luna38h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
1926 Luna100m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
1926 Luna$3,000

Full specifications

Case

9 specs
Category
Diver
Moonphase
Diameter
41mm
39mm
Thickness
14mm
10.1mm
Lug-to-Lug
48mm
46mm
Lug Width
20mm
21mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished
Water Resistance
300m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Anthracite

Movement

7 specs
Caliber
Sellita SW200-1
T607-
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
38h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Moonphase

Pricing

1 specs
MSRP
$2,100
$3,000

Follow this matchup

Get a note when Marathon GSAR (Government Search & Rescue) Diver's Automatic vs Tudor 1926 Luna gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

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.

Tudor 1926 Luna

The Tudor 1926 Luna offers a moonphase complication at an approachable price, featuring a 39mm polished steel case and domed sunray dials. It is powered by a chronometer-grade Sellita SW280-1 movement with a 41-hour power reserve. Some reviewers note that the dressier aesthetic of the 1926 line may not align with Tudor's overall brand identity, and the bracelet lacks micro-adjustments. Overall, owners and reviewers find the Tudor 1926 Luna a good value for its romantic moonphase complication and polished finishing.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.