The tissot seastar 1000 gmt watch is a limited-quantity, us-exclusive watersport choice. Stainless steel case is 46mm with an exhibition case back the two-toned black and green dial features a screw-down crown and case back, ceramic bezel ring, superluminova® hands and indexes, date display and a domed scratch-resistant sapphire crystal with antireflective coating swiss automatic movement has a power reserve up to 80 hours gmt function quickly adapts to different time zones the interchangeable quick-release stainless steel bracelet has a push-button folding clasp with safety and diver extension water-resistant to 300 meters