Side by side

Serica Ref. 5303 Diving ChronometervsBoldr Odyssey Bronze

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
Odyssey Bronze
BoldrOdyssey Bronze
MSRP $649

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Odyssey Bronze45.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Odyssey Bronze40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Odyssey Bronze500m
MSRP
Ref. 5303 Diving Chronometer$1,768
Odyssey Bronze$649

Full specifications

Case

6 specs
Diameter
39mm
45.5mm
Thickness
12.2mm
16.8mm
Lug-to-Lug
46.5mm
52mm
Lug Width
20mm
22mm
Material
Stainless Steel
Bronze
Water Resistance
300m
500m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Auburn

Movement

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

Pricing

1 specs
MSRP
$1,768
$649

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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 Odyssey Bronze

The Boldr Odyssey Bronze is widely praised for its robust, ship-like aesthetic and substantial feel, with its meteorite dial and OEM Horween strap highlighted as unique features. Owners feel the style, fit, finish, and specifications compensate for criticisms regarding the movements used at its price point. On balance, owners rate the Boldr Odyssey Bronze highly for its distinctive aesthetic and quality finishing.

From video reviewers

The 500m water resistance and Lumicast lume are standout features. The 45mm+ case size is a drawback for some wrists.

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