Seiko Cal. 6660 - 351

The Seiko 6660-351 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-393f0df67988]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1970

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