Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsTuseno Blackwater

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Marathon GSAR (Government Search & Rescue) Diver's Automatic at true scale

GSAR (Government Search & Rescue) Diver's Automatic

Tuseno Blackwater at true scale

Blackwater

Diameter

41mm

40.5mm

Lug-to-Lug

48mm

lowest

50mm

Thickness

14mm

n/a

Water Resistance

300m

highest

200m

MSRP

$2,500

$999

lowest

Movement

Sellita SW200-1

Sellita SW200-1

Case

6 specs
Diameter
41mm
40.5mm
Thickness
14mm
n/a
Lug-to-Lug
48mm
50mm
Lug Width
20mm
n/a
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Anthracite
Black
Lume
None
BGW9 Swiss Super-LumiNova

Movement

1 specs
Power Reserve
0h
n/a

Pricing

1 specs
MSRP
$2,500
$999
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Reviews

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 as a versatile and well-made tool watch, with reviewers highlighting its legibility, utilitarian build, and comfort. Owners appreciate the tritium gas tubes for exceptional illumination in darkness, a feature noted as superior to some alternatives. The 41mm case size is considered ideal by some, though one owner found it wore tall and bumped on objects. While the watch is generally seen as a solid value for a Swiss-made tool watch, some owners have reported quality control issues requiring warranty service. Overall, owners and reviewers rate the Marathon GSAR (Government Search & Rescue) Diver's Automatic highly for its robust build and constant legibility from tritium.

Tuseno Blackwater

The Tuseno Blackwater is praised by owners and reviewers for its attractive, non-ordinary diver styling and versatile design. Enthusiastic owners state it "slaps hard," and reviewers highlight its value proposition at its price point, durability, and compelling wrist presence. The integrated bracelet is a standout feature, offering fluidity. The Tuseno Blackwater features a Sellita SW200-1 automatic movement, 200m water resistance, and a 40.5mm case. Some reviewers note a 38-hour power reserve as a bit lacking, while others find the bezel action solid but potentially stiff. On balance, owners and reviewers rate the Tuseno Blackwater highly for its unique styling and value at the price.

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