[D] SRPE85K1 (FKA SRP637K1)

Seiko Prospex x Automatic ft. Metal Fin Tuna Men Diver Round 200m Water Resistant Watch SRPE85K1 SRPE85 SRPE-85 SRPE-85K1 SRP637K1 SRP637 SRP-637 SRP-637K1

Explore the rugged Seiko Prospex Tuna diver - a 200m water-resistant automatic watch with 4R36 movement (41h power reserve). Features hardlex crystal, LumiBrite lume, unidirectional bezel, and screw-down crown. The 48mm stainless steel case with three-fold clasp offers durability for professional diving and adventure.

Caliber Number / Movement
4R36 (automatic with manual winding capacity)

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

Crystal
Hardlex crystal

Luminous
LumiBrite on hands, indexes and bezel

Case / Band Material
Stainless steel case with stainless steel band (three-fold clasp with secure lock, push-button release with extender)

Water Resistance
200m / 660ft diver

Case Size
Thickness: 13.8 mm
Diameter: 48.0 mm
Length: 50.4 mm
Lug width: 22.0 mm

Other Specifications
Seiko Prospex x Automatic ft. Metal Fin Tuna
Unidirectional rotating bezel
Screw-down crown
Screw case back
24 jewels
Day and date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)