To celebrate the 55th anniversary of Seiko Divers Watch, a reprinted version of the “Professional Automatic Divers 300M” released in 1968 is now available. The case uses the newly developed "Ever-brilliant Steel"
with the world's highest level of corrosion resistance. The unique specifications of the anniversary year, which match the brand philosophy of pursuing reliability and realize the rarity appropriate for the 55th anniversary, are attractive. The dial and strap adopt a new “blue-gray” expression of the deep sea as a proof of the special model. It is on sale in 1100 worldwide. / Caliber: 8L55 / Driving period: Approximately 55 hours at maximum winding / Accuracy: Daily difference +15 seconds to -10 seconds / Frequency: 36000 vibrations / hour (10 vibrations / second) / Number of stones 37 stones / Second hand stop function / 300m waterproof for diving / with calendar (date) function / reverse rotation prevention bezel / screw lock type crown / one-piece structure / Lumi Bright: Yes (needle / index) / magnetically resistant 1 class / back lid serial number / MADE IN JAPAN / Limited to 1100 worldwide (500 domestic)

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Seiko  PROSPEX  Seiko Men's Prospex SRPA21K1  Black  Silver  SEIKO Marine Master Professional 300M Diver Automatic SLA021J1  Seiko Prospex SBDX021 300m Diver Deep Forest Limited 1968  Seiko Prospex SBEX007 Automatic Hi-Beat 300m Diver