Seiko Cal. 5640 - 935

The Seiko 5640-935 represents an important milestone in Seiko's 1973 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-83c1a08719ea]

Also known as: Rally, Crown

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1973

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