Seiko Cal. 6635 - 506

The Seiko 6635-506 represents an important milestone in Seiko's 1982 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a580b86bc7c0]

Also known as: Turtle, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1982

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