Seiko Cal. 6655 - 717

The Seiko 6655-717 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-5cfe145cdafa]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1966

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