Side by side

Seiko King TurtlevsTissot Seastar 1000 Powermatic 80 GMT

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

King Turtle
SeikoKing Turtle
MSRP $650
Seastar 1000 Powermatic 80 GMT
TissotSeastar 1000 Powermatic 80 GMT
MSRP $1,375

At a glance

13 of 29 specs differ
Diameter
King Turtle45mm
Seastar 1000 Powermatic 80 GMT46mm
Power Reserve
King Turtle41h
Seastar 1000 Powermatic 80 GMT80h
Water Resistance
King Turtle200m
Seastar 1000 Powermatic 80 GMT300m
MSRP
King Turtle$650
Seastar 1000 Powermatic 80 GMT$1,375

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
45mm
46mm
Thickness
13.2mm
15.4mm
Lug-to-Lug
47.7mm
46mm
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
Flat
Domed
AR Coating
Anti-reflective coating on inner surface
Yes
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

3 specs
Caliber
4R36
Powermatic 80
Power Reserve
41h
80h
Jewels
24
25

Pricing

1 specs
MSRP
$650
$1,375

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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 King Turtle

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many appreciating its faithful recreation of classic designs and proven movements like the 4R36 and 6R15. Reviewers highlight impressive case finishing and durability, noting that even larger models wear smaller than expected due to thoughtful case design. Some owners find the solar quartz models a great entry point, appreciating their design and solar functionality. However, specific variants receive critiques: the bracelet clasp on the Samurai is described as underwhelming, and the Sumo's bracelet width and clasp are seen as too narrow and rudimentary, respectively. The SPB183 is considered expensive for a Japanese watch, and its lume is noted as not quite matching older Seiko Monster models. The GMT function on the SPB519 is deemed less practical for serious travel, and its bezel clicks are described as quieter and mushier.

Tissot Seastar 1000 Powermatic 80 GMT

Owners widely praise the Tissot Seastar 1000 Powermatic 80 GMT for its excellent build quality, smooth winding feel, and the reliable Powermatic 80 movement providing an 80-hour power reserve. Reviewers highlight its remarkable value under $700, comfortable wearability, and appealing case/dial ratio. Some owners note the bezel's functionality for tracking a second time zone and the need to adjust the hour hand for date setting, a characteristic of its "True" GMT function. The rubber strap is considered comparable to those found on significantly more expensive watches. However, concerns exist regarding the movement's serviceability due to potential plastic components and reliance on Swatch Group service centers. Some find the bezel font and dial spacing unappealing, while others question the mineral glass bezel insert as a cost-cutting measure compared to ceramic. Accuracy is generally reported as good, though not COSC certified, and lume intensity is described as average by one owner.

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