Seiko Prospex x Mechanical Mini Tuna ft. Save The Ocean (STO) (Special Edition) Men Casual Formal Sports Round Diver 200m Water Resistant Watch SRPH77K1 SRPH77 SRPH-77 SRPH-77K1

Caliber Number / Movement
4R35 (automatic with manual winding capacity)

Power Reserve / Accuracy
Approximately 41 hours ( 45 to -35 seconds per day)

Crystal
Hardlex crystal

LumiBrite
Lumibrite on hands, indexes and bezel

Case & Band Material
Stainless steel case with silicone band

Water Resistance
200m / 660ft diver’s

Case Size
Thickness: 12.6 mm
Diameter: 43.2 mm
Length: 44.0 mm

Other Specifications
Seiko Prospex x Mechanical Mini Tuna ft. Save The Ocean (STO) (Special Edition)
SPECIAL EDITION on the case back
Unidirectional rotating bezel
Screw-down crown
Screw case back
23 jewels
Date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)