The chronofighter oversize divers are equipped with the automatic bi compax chronograph calibre g1732 and g1734 with date water resistant to 1000 feet 300 metres they feature a helium valve and a unidirectional bezel with 15 30 45 markers in superluminova as well as a large protected luminescent dot at 12 oclock fabulous timepieces for all watch technology enthusiasts and diving aficionados