Side by side

Seiko Prospex SPEEDTIMERvsYema Superman Worldtime GMT

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

Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000
Superman Worldtime GMT
YemaSuperman Worldtime GMT
MSRP $1,549

At a glance

13 of 29 specs differ
Diameter
Prospex SPEEDTIMER42.5mm
Superman Worldtime GMT39mm
Power Reserve
Prospex SPEEDTIMER45h
Superman Worldtime GMT40h
Water Resistance
Prospex SPEEDTIMER100m
Superman Worldtime GMT300m
MSRP
Prospex SPEEDTIMER$3,000
Superman Worldtime GMT$1,549

Full specifications

Case

5 specs
Category
Chronograph
GMT
Diameter
42.5mm
39mm
Thickness
15.1mm
Lug-to-Lug
50mm
Water Resistance
100m
300m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
39mm Automatic
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
8R46
Power Reserve
45h
40h
Jewels
34
25

Pricing

1 specs
MSRP
$3,000
$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 SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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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