Side by side

Serica Ref. 5303 Diving ChronometervsWilliam Wood Fearless

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
Fearless
William WoodFearless
MSRP $920

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Fearless39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Fearless40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Fearless100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Fearless$920

Full specifications

Case

3 specs
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
39mm
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
Seiko NH35
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$920

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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.

William Wood Fearless

The William Wood Fearless is noted for its wearable 39mm case size and comfortable 45mm lug-to-lug, with a matte black ion-plated finish and colorful rehaut accents. Reviewers highlight its recycled fire hose strap and 100m water resistance, stemming from its firefighter heritage. The Seiko NH35 movement is considered accurate for its price point. On balance, reviewers find the William Wood Fearless to be a well-finished field watch with unique heritage elements.

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