Side by side

Baltic MR ClassicvsSeiko Prospex Sea

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

MR Classic
BalticMR Classic
MSRP $589
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

14 of 29 specs differ
Diameter
MR Classic36mm
Prospex Sea43.8mm
Power Reserve
MR Classic42h
Prospex Sea41h
Water Resistance
MR Classic30m
Prospex Sea200m
MSRP
MR Classic$589
Prospex Sea$625

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
36mm
43.8mm
Thickness
9mm
12.8mm
Lug-to-Lug
44mm
48.7mm
Lug Width
20mm
22mm
Water Resistance
30m
200m

Crystal & Dial

4 specs
Crystal
Hesalite
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Hangzhou CAL5000a Micro-rotor
4R35
Power Reserve
42h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$589
$625

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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.

Baltic MR Classic

Owners widely praise the Baltic MR Classic's attractive dial with applied Breguet numerals and granular texture, noting it looks far more expensive than its price. Reviewers highlight the refined, dressy aesthetic and the visually appealing micro-rotor movement. Some owners report precise time-setting and a smooth winding action. Accuracy figures vary, with one owner seeing +1 second per day and another averaging +10 seconds per day. Concerns exist regarding the gold PVD finish's durability, with reports of wear from strap friction. The 36mm case is described as small, and some find the bezel chunky and the watch's overall height significant. The Chinese Hangzhou micro-rotor movement is noted as potentially noisy and difficult for local repair, though Baltic's customer service and warranty are praised. Overall, owners and reviewers rate the Baltic MR Classic highly for its dressy aesthetic and dial finishing at its price point.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

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