The Tissot Seastar 1000 GMT is a 40mm Swiss Made quartz dive watch with a GMT hand, rated to 300m and built with a screw-down crown and case back. It suits people who want a compact, go-anywhere sports watch that tracks a second time zone without the cost and servicing of a mechanical movement. Against mechanical GMT divers it is thinner on prestige but easier to live with: quartz accuracy, no winding, and a smaller 40mm case than most 42–44mm dive GMTs. Owners rate it highly for value and legibility, though some find the quartz movement and busy dial less special than automatic rivals.
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Owners rate it around 4.7 out of 5 and praise the build, the 300m rating and the compact size for the money. Criticism centers on the quartz movement and a busy dial rather than on reliability.
The Tissot Seastar 1000 GMT is a 40mm sports watch built for use on, in or under the water. It has a Swiss Made quartz movement and a GMT function.
The case is water-resistant to a pressure of 30 bar (300 m / 1000 ft). The crown and case back both screw down, and the screw-down crown also gives extra protection against knocks.
Superluminova ensures the watch can be read in the dark.
