Seiko Prospex
SRPE87K1 (FKA SRP639K1)
SRPE87K1 (FKA SRP639K1)
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Seiko Prospex x Automatic ft. Yellow Fin Tuna Men Diver Round 200m Water Resistant Watch SRPE87K1 SRPE87 SRPE-87 SRPE-87K1 SRP639K1 SRP639 SRP-639 SRP-639K1
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 resin band 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 resin band
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. Yellow 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)
