Side by side

Serica Ref. 5303 Diving ChronometervsBoldr The Boys

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
The Boys
BoldrThe Boys
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
The Boys38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
The Boys40h
Water Resistance
Ref. 5303 Diving Chronometer300m
The Boys200m
MSRP
Ref. 5303 Diving Chronometer$1,768
The Boys$299

Full specifications

Case

6 specs
Category
Diver
Tool
Diameter
39mm
38mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
44mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
The Boys' Brigade 90th Anniversary Edition

Movement

3 specs
Caliber
M100 COSC
Seiko NH35A
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$299

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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.

Boldr The Boys

Boldr The Boys is praised for its lightweight, durable titanium case, ergonomic lugs, and excellent legibility with strong lume. Owners note the competitive price and good customer service, while reviewers highlight the reliable SII NH35A movement and 200m water resistance. Some owners report that titanium scratches easily and question the brand's history and recognition. On balance, owners and reviewers rate Boldr The Boys highly for its practical features and value at $299.

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