Reliable Japanese-quartz movementStrong Hardlex crystal protects dial from scratchesCase diameter : 39 mmStainless steel case; blue dial; day-and-date functionsWater resistant up to 330 feet (100 M)

Japan 21 Jewels Automatic Self-Winding Movement(Caliber 7S26)Stainless Steel Case and Band with Push Button Deployment ClaspHardlex Mineral Crystal, Day/Date Display with Spanish Option, Silver Tone Luminous Hands and MarkersCase Size : 38mm Diameter, 11mm ThicknessWater Resistant - 30M, Transparent Screwed Down Caseback

Reliable Japanese-quartz movementStrong Hardlex crystal protects dial from scratchesWater resistant up to 99 feet (30 M)

Reliable Japanese-quartz movementStrong Hardlex crystal protects dial from scratchesBrass case; white dialCase diameter : 20.3 mmWater resistant up to 99 feet (30 M)

Flight computer, alarm chronographRotary slide rule bezel for rapid calculations and conversions of flight data as required by pilotsChronograph can measure up to 60 minutes in 1/5 second increments; after 60 minutes it will start counting again from "0" repeatedly up to 12-hours, alarm can be set on a 12-hour basisAlarm hands can indicate the time in a different time zoneWater resistant up to 330 feet (100 M)

Reliable Japanese-quartz movementCurved Hardlex crystalCase diameter : 33 mmStainless steel case; champagne dialWater resistant up to 165 feet (50 M)