Seiko Cal. 6678 - 645

The Seiko 6678-645 represents an important milestone in Seiko's 1979 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-c16232d78d30]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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