Seiko Cal. 5683 - 521

The Seiko 5683-521 represents an important milestone in Seiko's 1966 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-aa89c5bfb86f]

Also known as: Samurai, Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1966

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