Seiko Prospex Divers SPB187J1

Seiko Prospex Divers SPB187J1

1968 Diver's Watch Reinterpretation. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Part of a rich legacy of innovation in high-intensity timekeeping, Prospex continues to celebrate a long history of sports watch excellence with recreations and reinterpretations of landmark achievements.


Caliber Number 6R35
Movement Type Automatic with manual winding
Precision +25 to -15 seconds per day
Power reserve Approx. 70 hours
Jewels 24
  • Stop second hand function
  • Date display


Case Material Stainless steel (super hard coating)
Case Size
  • Thickness: 12.5mm
  • Diameter: 42.0mm
  • Lug-to-lug: 48.8mm
Crystal Sapphire crystal
Crystal Coating Anti-reflective coating on inner surface
LumiBrite LumiBrite on hands, index(es) and bezel
Clasp Three-fold clasp with secure lock , push button release with extender
Bracelet Length 200.0
Distance between lugs 20mm

Other Details

Weight 186.0
  • Unidirectional rotating bezel
  • Screw-down crown
  • Three-fold clasp with secure lock
  • Screw case back