The Tissot Seastar 1000 Quartz GMT T120.852.11.051.00 is a 40 mm dive-style watch from Tissot’s Seastar family. Its 316L stainless steel case is 11.77 mm thick, with a 20 mm lug width, a screw-down crown and a screw-down engraved caseback. The black dial has index hour markers and Super-LumiNova on the hands, under a sapphire crystal, and the steel bezel carries a mineral ring with a 24-hour scale, in black and green on this reference. It is powered by a Swiss quartz movement with a battery end-of-life indicator. Water resistance is rated at 300 meters (30 bar).

Alongside the hours, minutes, seconds and a date, a GMT hand tracks a second time zone against the 24-hour bezel. The stainless steel bracelet (Tissot reference T605049629) closes with a folding clasp with safety lock and push-buttons, and its quick-release system lets it be swapped for compatible Tissot straps without tools. The watch weighs 148 g and is covered by Tissot’s two-year warranty. Tissot’s US store lists it at USD 575.

Specialist hands-on reviews of this quartz GMT are still scarce. It is mostly presented by retailers as an affordable Swiss alternative to automatic GMT divers. On paper, its strengths at this price are the 300 m rating, the sapphire crystal and the tool-free quick-release bracelet. The trade-off is a battery-powered quartz movement rather than a mechanical one, which some enthusiasts will see as a plus for a grab-and-go travel watch. The T120.852.11.051.00 is in production and available to order from Tissot’s US online store.