Seiko Cal. 5644 - 903

The Seiko 5644-903 represents an important milestone in Seiko's 1969 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-fa6bba000f0c]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1969

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