Side by side

Serica Ref. 5303 Diving ChronometervsMarathon Jeep Rubicon GSAR

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
Jeep Rubicon GSAR
MarathonJeep Rubicon GSAR
MSRP $2,100

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Jeep Rubicon GSAR41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Jeep Rubicon GSAR40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Jeep Rubicon GSAR300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Jeep Rubicon GSAR$2,100

Full specifications

Case

4 specs
Diameter
39mm
41mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
48mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Green
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Sellita SW200-1
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$2,100

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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.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Marathon Jeep Rubicon GSAR

The Marathon Jeep Rubicon GSAR is widely praised as a rugged, high-quality tool watch that successfully blends Jeep branding with Marathon's functional heritage, featuring a unique dial with tritium illumination and an automatic Sellita SW200-1 movement. Owners appreciate its satisfying bezel action and durable build, making it a reliable daily wear that pairs well with Jeep's rugged image. However, some find the Jeep logo to be corporate and out of place with Marathon's austere design ethos, while one owner notes that second-hand examples can show wear on the bezel. The watch is priced at $1,500 USD. Overall, owners and reviewers rate the Marathon Jeep Rubicon GSAR highly for its robust construction and distinctive tritium lume, which are considered its strongest assets.

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