Seiko Astron SSJ013 Blue Grid GPS Solar Titanium Bulova Open Case Back : Yes

Open Case Back : Yes

Water resistance 100M/330FT/10ATM

Time transfer function (Switching between the main-dial and sub-dial)

the H-10 appears with intricate contrasting snail and pearled patterns for the American Classic models it drives and streamlined surfaces for the pilots' watches

Seiko Astron SSJ013 Blue Grid GPS Solar Titanium Bulova Open Case Back : YesCaliber Number 3X62 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 10 Case Band Case Material Titanium (super hard coating) Case Size Thickness: 12. 0mm Diameter: 41. 2mm Lug to lug: 48. 6mm Crystal Sapphire crystal Crystal Coating Super clear coating LumiBrite Lumibrite