Seiko Cal. 5690 - 608

The Seiko 5690-608 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ff1cd980fd6f]

Also known as: Turtle, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1966

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