Be Your Own Pilot "Naviator" pilot watch.....don''t be a passenger, Be Your Own Pilot! Aviation cockpit dial with official military fonts, luminescent numbers, indices, and hands for low-light visibility Discreet date window, top crown used for internal rotating timer bezel. Screw down bottom crown and 50m (100m rated) water-resistance. Case size 42mm x 48mm x 13mm. Sapphire crystal with blue anti-reflective coating inside. Transparent sapphire caseback and genuine leather strap.