[D] SRPH31K1

Seiko 5 Sports x Automatic ft. Field Series Men Formal Round 100m Water Resistant Watch SRPH31K1 SRPH31 SRPH-31 SRPH-31K1

Discover the rugged Seiko 5 Sports Field Series automatic watch, designed for durability and precision. Its 39.4mm stainless steel case houses the reliable 4R36 movement with 41-hour power reserve, day-date display, and 100m water resistance. Enhanced with magnetic resistance, LumiBrite illumination, and a curved hardlex crystal. 

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

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

Crystal
Hardlex crystal (curved)

Luminous
LumiBrite on hands and indexes

Case / Band Material
Stainless steel case with leather (nylon) band

Water Resistance
100m / 10 bar

Case Size
Thickness: 13.2 mm
Diameter: 39.4 mm
Length: 48.1 mm
Lug width: 20.0 mm

Other Specifications
Seiko 5 Sports x Automatic ft. Field Series
Magnetic resistance (4,800 A/m)
See-through back case
Screw case back
24 jewels
Day and date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)