Seiko Cal. 5641 - 653

The Seiko 5641-653 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f8ab7fb1c96b]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1968

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