Side by side

Serica Ref. 5303 Diving ChronometervsZelos Thresher 41 GMT

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
Thresher 41 GMT
ZelosThresher 41 GMT
MSRP $729

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Thresher 41 GMT41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Thresher 41 GMT40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Thresher 41 GMT200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Thresher 41 GMT$729

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39mm
41mm
Thickness
12.2mm
11.5mm
Lug-to-Lug
46.5mm
41mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Enamel Black
Damascus LE
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Miyota 9075 GMT
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$729

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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.

Zelos Thresher 41 GMT

Owners widely praise the Zelos Thresher 41 GMT for its creative design, titanium construction, and excellent lume. Some find the worldtimer bezel busy and the GMT function less easy to read, while others note the double Mother of Pearl dial's dynamic color shifts can be reflective in direct sun. The bezel-based world timer requires manual adjustment and allows for independent GMT use. Overall, owners rate the Zelos Thresher 41 GMT highly for its unique titanium build and striking dial at its price point.

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