Seiko Prospex SNE533 Exclusive Blue Dial Solar Diver Accutron Enhanced optical heart rate¹ technology

Enhanced optical heart rate¹ technology gauges the intensity of your fitness activities as well as heart rate variability to calculate your stress level score

then heat-pressed to mold a MUDMASTER bezel that is more complex and intricate

a helium release valve

Retrograde Calendar

Navy blue outer ring with white markers

Seiko Prospex SNE533 Exclusive Blue Dial Solar Diver Accutron Enhanced optical heart rate¹ technologySolar Diver Powered by light energy no battery change required 10 month power reserve once fully charged Date calendar Blue patterned dial Screwdown crown and caseback One way rotating elapsed timing bezel LumiBrite hands and markers Case diameter: 47. 0mm Lightweight matte blue case Water Resistance: Diver's Watch to 200 meters (660 feet). Meets ISO standards and is suitable for scuba diving Silicone strap Caliber V157