The chronofighter oversize gmt black gold timepiece comes in 18k 5n red gold its calibre is g1733 automatic bi compax chronograph the watch makes 28 800 vibrations per hour additional features include incabloc shock absorber 28 jewels and a 48 hour power reserve a number of outstanding complications have been included these are gmtsecond time zone double date window at the 12 oclock mark and a chronograph having seconds and a 30 minute counter hands mark hours minutes and seconds ano