Luminox Mens F-35 Lightning II Chronograph - Black and Orange Dial - SteelEquipped with a bi directional rotating bezel with a slide rule ring and a dial ring with tachymeter scale, this multifunctional F 35 Lightning II Chronograph is an ideal companion for any pilot. Ronda 5050. B Swiss quartz movement Black textured dial with orange accents 316L stainless steel brushed case and bracelet Slide rule bezel can be used to calculate distances, flight times and fuel consumption Rotating 1 way diver Screwed case back Security