Which is cheaper, the Boldr Odyssey Regatta or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $900, against $1,499 for the Boldr Odyssey Regatta — a $599 gap before any retailer discounting.

Which is bigger, the Boldr Odyssey Regatta or the Seiko Prospex Sea?

The Boldr Odyssey Regatta wears larger at 45.5mm versus 41mm for the Seiko Prospex Sea — a 4.5mm difference across the dial.

Which has better water resistance, the Boldr Odyssey Regatta or the Seiko Prospex Sea?

The Boldr Odyssey Regatta is rated to 500m versus 200m for the Seiko Prospex Sea.

Which has a longer power reserve, the Boldr Odyssey Regatta or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 70-hour power reserve against 40 hours on the Boldr Odyssey Regatta.

What movement does the Boldr Odyssey Regatta run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Boldr Odyssey Regatta uses the ETA Valjoux 7750 and the Seiko Prospex Sea uses the 6R35.

Side by side

Boldr Odyssey RegattavsSeiko Prospex Sea

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

Boldr Odyssey Regatta

odyssey-regatta-admiral-blue

MSRP $1,499

Seiko Prospex Sea

spb317j1

MSRP $900

At a glance

13 of 29 specs differ

Diameter

Odyssey Regatta45.5mm

Prospex Sea41mm

Power Reserve

Odyssey Regatta40h

Prospex Sea70h

Water Resistance

Odyssey Regatta500m

Prospex Sea200m

MSRP

Odyssey Regatta$1,499

Prospex Sea$900

Full specifications

Case

5 specs

Diameter

45.5mm

41mm

Thickness

16mm

12.3mm

Lug-to-Lug

52mm

46.9mm

Lug Width

22mm

20mm

Water Resistance

500m

200m

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

Regatta Admiral Blue

Black

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

ETA Valjoux 7750

6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$1,499

$900

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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 Regatta

The Boldr Odyssey Regatta is noted for its robust functionality and utilitarian design, powered by a Valjoux 7750 Elaboré movement. It features a tachymeter bezel graduated in knots and offers 500m water resistance. While its 45.5mm diameter, 18.2mm thickness, and 245g weight make it a substantial timepiece, it wears better than its dimensions might suggest. Overall, owners and reviewers highlight the Boldr Odyssey Regatta's workhorse movement and functional tool-watch capabilities.

From video reviewers

500m water resistance is a consistently praised feature. The watch's significant weight and large case size were noted as drawbacks by multiple reviewers. Reviewers disagreed on whether the bezel's 15-minute markings were redundant given the regatta complication.

Fratello

WatchUSeek

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

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