Seiko Cal. 6636 - 770

The Seiko 6636-770 represents an important milestone in Seiko's 1985 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-9df67fae73ce]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1985

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