Side by side

Seiko Prospex SPEEDTIMER Mechanical ChronographvsTissot Seastar 1000 GMT

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

Seastar 1000 GMT
TissotSeastar 1000 GMT
MSRP $575
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 Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

Tissot Seastar 1000 GMT

Owners widely praise the Tissot Seastar 1000 GMT for its sapphire crystal, 300m water resistance, and GMT complication, with one owner expressing deep satisfaction. A point of contention for some is that Swiss quartz movements may exhibit second-hand misalignment with markers, unlike certain Japanese quartz movements. On balance, owners rate the Tissot Seastar 1000 GMT highly for its robust features and value.

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical Chronograph42mm
Seastar 1000 GMT40mm
Power Reserve
Prospex SPEEDTIMER Mechanical Chronograph45h
Seastar 1000 GMT40h
Water Resistance
Prospex SPEEDTIMER Mechanical Chronograph100m
Seastar 1000 GMT300m
MSRP
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Seastar 1000 GMT$575

Full specifications

Case

5 specs
Category
Chronograph
Diver
Diameter
42mm
40mm
Thickness
14.6mm
11.77mm
Lug-to-Lug
49.5mm
40mm
Water Resistance
100m
300m

Crystal & Dial

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

Movement

4 specs
Caliber
8R48
11 1/2'''
Type
Automatic
Quartz
Power Reserve
45h
40h
Jewels
34
25

Pricing

1 specs
MSRP
$2,500
$575
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