Seiko Cal. 5663 - 850

The Seiko 5663-850 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-9f1449df29ba]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1969

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