Breitling gents navitimer 01 46mm pefect for the modern man with its new stature new power the classic navitimer appears in a 46 mm diameter a large format that accentuates its presence on the wrist and enhances the originality of its design while optimizing readability a transparent caseback provides a chance to admire the officially chronometer certified high performance selfwinding chronograph movementmovement selfwinding mechanical power reserve min 70hrschrongraph 14th second 30