Features: stainless steel case stainless steel bracelet eco-drive promaster 4-year power reserve (in power save mode) mineral glass two-way bezel 30 cities world time coordinated universal time (utc) display race timer, countdown timer to 99 mins split time, auto chrono start 1/100 sec chronograph up to 24 hrs dual time, dual alarm daylight saving function 12/24 hr time, calendar screw case back push button buckle low charge indicator 200m water resistant approx.Case diameter 48mm