This gmt timepiece by seiko ananta makes use of the unique spring drive technology a japanese guarantee of accuracy this watch consists of 296 components it is equipped with 5r66 calibre that has 30 bearing jewels for convenience the watch comes with a 72 hour power reserve and a power reserve indicator a date window is positioned at the 3 oclock mark additional features include a gmt hand luminous dial elements see through case back and scratch resistant sapphire crystal glass with a