Side by side

Serica Ref. 5303 Diving ChronometervsSpinnaker Fleuss Chronograph

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
Fleuss Chronograph
SpinnakerFleuss Chronograph
MSRP $325

At a glance

15 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Fleuss Chronograph43mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Fleuss Chronograph40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Fleuss Chronograph100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Fleuss Chronograph$325

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
39mm
43mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
51mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
Seiko VK64
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$325

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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.

Spinnaker Fleuss Chronograph

The Spinnaker Fleuss Chronograph is praised for its impressive aesthetic, comfortable wearability, and excellent value at its affordable price point. One reviewer notes the chronograph function stops at 60 minutes and requires resetting. Owners report the internal bezel rotates too easily and the clasp lacks fine finishing. On balance, owners and reviewers rate the Spinnaker Fleuss Chronograph highly for its meticulous attention to detail and overall value.

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