Side by side

Maen Manhattan 40 MSDvsSeiko Prospex Sea

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

Manhattan 40 MSD
MaenManhattan 40 MSD
MSRP $1,249
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

14 of 29 specs differ
Diameter
Manhattan 40 MSD40mm
Prospex Sea43.8mm
Power Reserve
Manhattan 40 MSD40h
Prospex Sea41h
Water Resistance
Manhattan 40 MSD100m
Prospex Sea200m
MSRP
Manhattan 40 MSD$1,249
Prospex Sea$625

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
40mm
43.8mm
Thickness
12.8mm
Lug-to-Lug
48.7mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
MSD.01
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-1
4R35
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$1,249
$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.

Maen Manhattan 40 MSD

The Maen Manhattan 40 MSD is widely praised for its refined, architectural design, particularly its slim 9.6mm case, integrated bracelet that feels engineered as part of the case, and highly finished surfaces. Owners specifically highlight the stunning jade dial and the Midnight Blue dial's transformation in sunlight. The 70s-inspired integrated bracelet is noted as thin yet strong, and the 100m water resistance is a concrete feature. However, some enthusiasts find the 49.3mm lug-to-lug measurement too large for a retro-inspired rectangular watch, suggesting it wears large, while others with larger wrists appreciate the option, and some feel it wears smaller than its dimensions imply. The Sellita SW200 movement has a 38-hour power reserve, and the printed logo appears flat against the applied indices, with the integrated bracelet limiting strap change options.

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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