Side by side

Seiko Prospex SeavsYema Superman Worldtime GMT

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

Prospex Sea
SeikoProspex Sea
MSRP $595
Superman Worldtime GMT
YemaSuperman Worldtime GMT
MSRP $1,549

At a glance

12 of 29 specs differ
Diameter
Prospex Sea41.7mm
Superman Worldtime GMT39mm
Power Reserve
Prospex Sea41h
Superman Worldtime GMT40h
Water Resistance
Prospex Sea200m
Superman Worldtime GMT300m
MSRP
Prospex Sea$595
Superman Worldtime GMT$1,549

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
41.7mm
39mm
Thickness
12.3mm
Lug-to-Lug
49.5mm
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Dial Color
Black
39mm Automatic
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
4R35
Power Reserve
41h
40h
Jewels
23
25

Pricing

1 specs
MSRP
$595
$1,549

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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.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

Yema Superman Worldtime GMT

Owners widely praise the Yema Superman Worldtime GMT for its premium feel, unique bezel-lock mechanism, and attractive domed crystal. Some owners note the aluminum bezel insert is less desirable than ceramic and report the bracelet clasp can be stiff or difficult to open. Inconsistent quality control and poor customer service have been flagged by some owners. On balance, owners value the Yema Superman Worldtime GMT for its distinctive features and comfortable wearability.

From video reviewers

The "Coke" bezel and maxi dial are attractive design elements. The in-house automatic GMT movement is a French alternative to pricier GMTs.

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