Seiko Prospex SRPF77 Save The Ocean Manta Ray Turtle oktober Serial number engraved on the

Serial number engraved on the case back

Regular timekeeping:

screws and buttons treated in a mirror finish

while recreating and reinterpreting landmark achievements

The number of pointer lines has been increased from 60 to 72 for easier to read World Time and sunrise times

Seiko Prospex SRPF77 Save The Ocean Manta Ray Turtle oktober Serial number engraved on theCaliber Number 4R36 Movement Type Automatic with manual winding capacity Duration Approx. 41 hours Exterior Crystal Sapphire crystal with magnifier Crystal Coating Anti reflective coating on inner surface LumiBrite Lumibrite on hands, indexes and bezel Band Material Silicone Other Details Water Resistance 200m 660ft diver's Case Size Thickness: 13. 2 Diameter: 45 Length: 47. 7 Weight 128. 0 g Other Specifications Screw case back Screw down crown