Seiko Cal. 6645 - 678

The Seiko 6645-678 represents an important milestone in Seiko's 1976 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-bfc6a012d836]

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1976

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