Seiko Prospex Divers 300M

Ref. SLA021J1
  • £2,820.00
  • Seiko Prospex Divers 300M


The overall design of the SLA021 is inspired by the original 1968 model, but many details have been upgraded and updated. The watch features the high-grade 8L35 mechanical caliber that has been especially designed for divers watches.

It consists of 192 parts using precise machining techniques and is hand assembled and adjusted by skilled craftsmen and women at the Shizukuishi Watch Studio in Morioka in the north of Japan.

  • Sapphire Glass Sapphire Glass
  • Screw-down crown Screw-down crown
  • 26 jewels 26 jewels
  • 50 Hours power reserve 50 Hours power reserve
  • Diver's Watch 300m Diver's Watch 300m
  • Date Window Date Window
  • Unidirectional rotating bezel Unidirectional rotating bezel


  • Case Diameter
  • Case Type
    Stainless steel
  • Dial Colour
  • Case thickness
  • Band Info
    Stainless Steel
  • Buckle type
    Three-fold clasp with secure lock


  • Movement type
    Mechanical Automatic
  • Power reserve
    50 Hours
  • Accuracy
    -10/+15 seconds per day
  • Calibre
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