Seiko Prospex Watch SPB209J1

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Seiko Prospex Watch SPB209J1

This timepiece is from the Alpinist collection, first launched in 1959 exclusively for the Japanese market. Designed for Japanese ‘Yama-otoko’ mountain men, to be reliable in treacherous terrain, these are part of the Land collection.


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
Case Size
  • Thickness: 13.2mm
  • Diameter: 39.5mm
  • Lug-to-lug: 46.4mm
Crystal Sapphire crystal with magnifier
Crystal Coating Anti-reflective coating on inner surface
LumiBrite Lumibrite on hands and index(es)
Band Material Calfskin
Clasp Three-fold clasp with push button release
Distance between lugs 20mm

Other Details

Water Resistance 20 bar
Weight 85.0g
  • See-through case back
  • Screw case back
  • Rotating compass inner ring
  • Screw-down crown