Seiko Presage x Mechanical Style 60s ft. Open Heart Men Casual Formal Sports Round 50m Water Resistant Watch SSA426J1 SSA426 SSA-426 SSA-426J1

Caliber Number / Movement
4R39 (automatic with manual winding capacity)

Power Reserve / Accuracy
Approximately 41 hours ( 40 to -20 seconds per day)

Crystal
Hardlex crystal (curved)

LumiBrite
Lumibrite on hands and indexes

Case & Band Material
Stainless steel case with nylon band

Water Resistance
50m / 5 bar

Case Size
Thickness: 12.8 mm
Diameter: 40.8 mm
Length: 47.0 mm

Other Specifications
Seiko Presage x Mechanical Style '60s ft. Open Heart
Made in Japan
See-through case back
Screw case back
24 jewels
24-hour display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)