SEIKO SPB183J1 PROSPEX Men’s Analog Watch Diver 55th Anniversary Limited Edition Date Dual Straps Automatic 42.7mm SS Bracelet Blue

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55 years ago, Seiko introduced its, and Japan’s, first ever diver’s watch. With an automatic movement and water resistance to 150m, it proved its reliability when it was used by members for Antarctic survey in the 1960s. In the years that followed, Seiko created many other diver’s watches that found favor with professional divers and adventurers alike, thanks to their high quality and reliability.
Special anniversary models suitable for the finale of 2020, which celebrated the 55th anniversary of the Seiko diver’s watch will appear. Based on the historical models released in 1965 and 1970, which are the milestones of Seiko diver’s watch history, this is a limited collections that is updated to the specifications and design suitable for the 55th anniversary.

1970Diver’s Modern Re-interpretation
Introduced in 1965, Seiko’s innovative diver’s watch has been chosen by divers and adventurers globally.
Seiko’s diving watch has become a global standard as a result of over 50 years of innovation.
The 1970 launch model, which boasts strong popularity in its history, will be reinstated with a blue color.
It is resurrected by modern state-of-the-art technology and a design interpretation.

A unique profile and a proud history
The uniqueness of the design of the 1970 watch stemmed largely from the way that the crown, moved to the 4 o’clock position, was protected by the extension of the case around it. The design turned out to be as memorable as it was functional and this 150 meter water resistant diver’s watch rapidly found favor among those who needed a watch of exceptional strength. It was worn by the Japanese adventurer, Naomi Uemura, when he did a solo dog-sled run from Greenland to Alaska, a journey of 12,000 kilometers that took eighteen months.

Naomi Uemura – adventurer
Born in 1941 in Toyooka City, Hyogo Prefecture. After entering Meiji University in 1960, he joined the alpine club and began his career as an adventurer. In 1970, he climbed Everest for the first time as a Japanese citizen and became the world’s first top mountain climber in the five continents by climbing McKinley in the same year. From 1974 to 1976, he ran 12,000 kilometers of the Arctic region with dog-sledge alone. In 1978, he reached the Arctic Point with dog-only dogs, and ran through the 3,000 kilometers of Greenland and the front line of the world’s adventurers. However, after achieving the world’s first feat by climbing McKinley in the winter of 1984, his reporting of the successful climb was to be his last form of communication to be made. In that same year, he was the fourth person in Japan to be awarded the National Honor Award. His warm personality full of humanity, who continued to challenge harsh nature, has won many hearts.

Reviving the unique design completely up-to-date in its technology
The new Prospex re-creation of this 1970 diver’s watch is slightly larger than the original but faithful in every other respect to its design.
The case was given a wide, flowing design purely to protect the crown at the 4 o’clock position.

Specifications suitable to the present day
It is powered by Caliber 6R35 that delivers a power reserve of 70 hours. The case has a super-hard coating and a dual-curved sapphire crystal with anti-reflective coating and is 200 meter water resistant. The upper surface of the bezel rim is Zaratsu polished to a perfect mirror finish.

Special box
The watch is offered in a special box with blue color additional strap made of silicon.

Limited edition of 5,500 pieces

Movement
Caliber Number
6R35

Movement Type
Automatic with manual winding capacity

Accuracy
+25 to -15 seconds per day

Exterior
Case Material
Stainless steel (super hard coating)

Crystal
Curved sapphire crystal

Crystal Coating
Anti-reflective coating on inner surface

LumiBrite
Lumibrite on hands, indexes and bezel

Clasp
Three-fold clasp with secure lock , push button release with extender

Other Details
Water Resistance
200m / 660ft diver’s

Case Size
Thickness: 13.2 mm
Diameter: 42.7 mm
Length: 46.6 mm
Weight: 180.0 g
Bracelet Length: 200 mm

Other Specifications
An additional silicone strap is included
LIMITED EDITION on the case back
Screw case back
Screw-down crown
Serial number engraved on the case back
Unidirectional rotating bezel

Other Features
24 jewels
Date display
Stop second hand function