Which is cheaper, the Maen Manhattan 37 IFL Edition or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

At MSRP the Maen Manhattan 37 IFL Edition is the cheaper of the two at $1,199, against $1,300 for the Seiko Prospex Sea 1965 Heritage Diver's Watch — a $101 gap before any retailer discounting.

Which is bigger, the Maen Manhattan 37 IFL Edition or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch wears larger at 40mm versus 37mm for the Maen Manhattan 37 IFL Edition — a 3mm difference across the dial.

Which has better water resistance, the Maen Manhattan 37 IFL Edition or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch is rated to 300m versus 100m for the Maen Manhattan 37 IFL Edition.

Which has a longer power reserve, the Maen Manhattan 37 IFL Edition or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch carries a 72-hour power reserve against 40 hours on the Maen Manhattan 37 IFL Edition.

What movement does the Maen Manhattan 37 IFL Edition run compared to the Seiko Prospex Sea 1965 Heritage Diver's Watch?

Both watches run automatic movements — the Maen Manhattan 37 IFL Edition uses the Sellita SW200-1 and the Seiko Prospex Sea 1965 Heritage Diver's Watch uses the 6R55.

Side by side

Maen Manhattan 37 IFL EditionvsSeiko Prospex Sea 1965 Heritage Diver's Watch

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

Maen Manhattan 37 IFL Edition

manhattan-37-ifl-01

MSRP $1,199

Seiko Prospex Sea 1965 Heritage Diver's Watch

spb451j1

MSRP $1,300

At a glance

15 of 29 specs differ

Diameter

Manhattan 37 IFL Edition37mm

Prospex Sea 1965 Heritage Diver's Watch40mm

Power Reserve

Manhattan 37 IFL Edition40h

Prospex Sea 1965 Heritage Diver's Watch72h

Water Resistance

Manhattan 37 IFL Edition100m

Prospex Sea 1965 Heritage Diver's Watch300m

MSRP

Manhattan 37 IFL Edition$1,199

Prospex Sea 1965 Heritage Diver's Watch$1,300

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

IFL.01

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200-1

6R55

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$1,199

$1,300

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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 37 IFL Edition

Maen Manhattan is praised for its value at $1,499, featuring a slim 9.3mm case, 100m water resistance, and a comfortable integrated bracelet. Owners highlight its simple design and automatic movement.

From video reviewers

The hand-painted dial is a standout feature. The lume brightness is not particularly bright. Reviewers disagree on the value proposition at the $1,499 price point.

Fratello

Seiko Prospex Sea 1965 Heritage Diver's Watch

The Seiko Prospex Sea 1965 Heritage Diver's Watch is praised for its refined engineering and updated features, including a 300m water resistance and a 72-hour power reserve from the Caliber 6R55 movement in a 40mm case. Owners note its better build quality and interesting finishing with a mix of polished and brushed surfaces. The "Tranquil Teal" variant features a jewel-toned dial with a rippling-water pattern. However, some owners consider the price too high, and concerns exist regarding the accuracy of the 6R movements, with some reporting theirs run slow. One review notes a reflective dial that impacts legibility. On balance, owners and reviewers appreciate the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined design and improved specifications over previous generations, despite some reservations about movement accuracy and price.

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