Side by side

Boldr Odyssey 40mmvsSerica Réf. 5303

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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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.

Boldr Odyssey 40mm

Owners praise Boldr for impressive specifications and value, with one owner noting the Odyssey Black Dragonfish has superior specs and movement compared to other models. A separate owner finds the Venture to be an exceptional value and versatile with strap changes. However, one owner feels the Venture's size is borderline for an 8-inch wrist. Overall, owners rate Boldr highly for its value and specifications.

Serica Réf. 5303

Owners widely praise the Serica Réf. 5303 for its unique neo-vintage design, sophisticated aesthetics, and excellent finishing, with many highlighting the smooth winding action and the tactile quality of the bezel click as industry-benchmark. The 39mm case is frequently cited as well-proportioned and wearable, especially for smaller wrists. Accuracy figures vary, with one owner reporting +2 seconds per day and another +5.5 seconds per day, while the 42-hour power reserve was noted as a point of desire for longer duration. Some owners have reported significant quality control issues, including dial shifting, non-functional hacking, and misaligned or jammed bezels, with concerns also raised about the Soprod movement and the manufacturer's communication. Overall, owners rate the Serica Réf. 5303 highly for its distinctive design and refined finishing, despite some significant quality control concerns raised by a few.

From video reviewers

The COSC and Grand Chronomètre Serica® certifications are a significant strength. No shared weaknesses were identified.

At a glance

10 of 29 specs differ
Diameter
Odyssey 40mm40mm
Réf. 530339mm
Power Reserve
Odyssey 40mm42h
Réf. 530342h
Water Resistance
Odyssey 40mm300m
Réf. 5303300m
MSRP
Odyssey 40mm$799
Réf. 5303$1,857

Full specifications

Case

5 specs
Category
Diver
Diameter
40mm
39mm
Thickness
12.5mm
12.2mm
Lug-to-Lug
48mm
46.5mm
Material
Titanium
Stainless Steel

Crystal & Dial

3 specs
AR Coating
Yes
Dial Color
Aurora
Lume
Super-LumiNova
None

Movement

1 specs
Caliber
Soprod M100

Pricing

1 specs
MSRP
$799
$1,857
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