Seiko Cal. 6656 - 601

This Spring Drive model from 1978 features a 34mm Titanium case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-74d72f2a04bf]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1978

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