Side by side

Baltic Scalegraph ClassicvsSeiko Prospex Sea

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

The bottom line

The 34mm Prospex Sea wears 5.5mm narrower than the 39.5mm Scalegraph Classic — that's a meaningful jump on most wrists.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Baltic Scalegraph Classic

Owners widely praise the Baltic Scalegraph Classic for its stunning retro racing design, detailed dial, and 39.5mm case size, with many finding it offers excellent value. However, some owners report issues with finishing and fit, describing the watches as light or "toylike," while others find the finishing comparable to higher-end brands. Reviewers and owners alike criticize the screw-down chronograph pushers as finicky and impractical, especially given the 100m water resistance which some feel is conceptually incongruent with its rally timer purpose. One owner experienced misaligned bezel markers and moisture ingress after pool use, leading to a return. On balance, owners and reviewers value the Baltic Scalegraph Classic's aesthetic and value proposition, though practical usability concerns regarding the chronograph pushers and isolated quality control issues are noted.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many appreciating its comfortable wearability due to its case shape and lug-to-lug distance. Reviewers consistently highlight its impressive finishing and classic dive watch design, often noting the bright LumiBrite lume. Some owners find the watch to be large, thick, and heavy, while others consider it the perfect size, indicating a split opinion on wearability for smaller wrists. The power reserve from some movements is noted as less than newer variants, and the clasp quality receives mixed feedback. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional finishing and value proposition in the dive watch market.

Where to get them

Check prices & track

Baltic Scalegraph Classic
Baltic Scalegraph Classic
MSRP $1,712
Seiko Prospex Sea
Seiko Prospex Sea
MSRP $795
Scalegraph Classic
BalticScalegraph Classic
MSRP $1,712
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

13 of 29 specs differ
Diameter
Scalegraph Classic39.5mm
Prospex Sea34mm
Power Reserve
Scalegraph Classic63h
Prospex Sea40h
Water Resistance
Scalegraph Classic50m
Prospex Sea200m
MSRP
Scalegraph Classic$1,712
Prospex Sea$795

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
39.5mm
34mm
Thickness
13.5mm
8.7mm
Lug-to-Lug
47mm
40.8mm
Lug Width
20mm
16mm
Water Resistance
50m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Panda
Black
Lume
BGW9
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Sellita SW510-M
6N01
Type
Manual
Quartz
Power Reserve
63h
40h

Pricing

1 specs
MSRP
$1,712
$795

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