Seiko Cal. 5640 - 263

The Seiko 5640-263 represents an important milestone in Seiko's 1972 lineup. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-76449ad4dc87]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1972

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