Seiko Astron HAB001 Blue Angular Dial GPS Solar Titanium Casio G-Shock Classic GA110SL-8A a double gasket construction and

a double gasket construction and screw-down crown are designed and tested for 300 m / 1000 ft of water resistance

Rotating Bezel

The Military Navigator Pilot's Quartz uses self contained Tritium gas tubes to ensure constant visibility in low light situations

the "Kampfschwimmer" timepiece is secured to a special compass board and is waterproof up to 30 bar

Alpina STARTIMER PILOT Quartz AL-247B4S6

Seiko Astron HAB001 Blue Angular Dial GPS Solar Titanium Casio G-Shock Classic GA110SL-8A a double gasket construction andMovement Caliber Number 5X63 Movement Type GPS solar Precision 15 seconds per month (without receiving a GPS signal and at temperatures between 5C and 35C ) Power reserve Operating for approx. 6 months (when fully charged), power save: approx. 2 years Jewels 14 Functions Overcharge prevention function Power save function Chronograph up to 24 hours in 1 20 second increments Perpetual calendar to the february 28, 2100 World time function (38 cities)