15 optimized vents

This watch comes with a warranty from Luminox's Swiss-made guarantee

The ball bearing on the inside of the markers indicates the minute and the ball bearing running along the outer edge of the watchface indicates the hour

and scratch-resistant sapphire crystal with anti-reflective coating

Battery Life: Up to 3 years

SEIKO Mens Blue Dial Silver-tone Stainless Steel Band Quartz Watch - SNE549 bear grylls survival 15 optimized ventsSEIKO Mens Blue Dial Silver tone Band Stainless Steel Quartz Watch This Seiko solar powered dive watch replaces the model SNE435. Note: The SNE549 is the exact same watch as the SNE435, Seiko just changed the model number. It is a special edition for Seiko's newly formed association with the Professional Association of Diving Instructors or PADI. The watch has a 44mm stainless steel case with a hardlex crystal. This new model features a Seiko Caliber