Side by side

Serica Ref. 5303 Diving ChronometervsGruppo Gamma Vanguard Weathered

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
Vanguard Weathered
Gruppo GammaVanguard Weathered
MSRP $790

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Vanguard Weathered42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Vanguard Weathered42h
Water Resistance
Ref. 5303 Diving Chronometer300m
Vanguard Weathered100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Vanguard Weathered$790

Full specifications

Case

7 specs
Category
Diver
Diameter
39mm
42mm
Thickness
12.2mm
12.6mm
Lug-to-Lug
46.5mm
49.5mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Weathered
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Forged Carbon

Movement

3 specs
Caliber
M100 COSC
Miyota 9039
Power Reserve
42h
42h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$790

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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.

Gruppo Gamma Vanguard Weathered

The satin-finished steel case is well-executed and aesthetically pleasing. The watch's lumières de nuit are not particularly bright, which might be a drawback for some users. Reviewers disagree on the watch's originality, with one reviewer finding it pleasing in-person and another describing it as decidedly derivative.

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