Details: Silver-tone stainless steel case with a silver-tone stainless steel bracelet. Black ceramic bezel. Black dial with silver-tone hands and index hour markers. Dial Type: Analog. Luminescent hands and markers. Date display at the 3 o'clock position. Seiko Caliber 8X22 quartz movement with a 2 years power reserve. Scratch resistant sapphire crystal. Solid case back. Round case shape, case size: 45.4 mm, case thickness: 12.4 mm. Fold over with safety release clasp. Water resistant at 100 meters / 330 feet. Functions: perpetual calendar, gps, date, hour, minute, second, daylight saving time, power reserve display, power save function, reception result display function, world time function (40 time zones). Additional Info: function to prevent the gps signal reception (in-flight mode), overcharge prevention function and satellite acquisition status display function. Luxury watch style. Watch label: Japan Movt. Seiko Astron Perpetual World Time Quartz Black Dial Men's Watch SSE161J1.