Seiko Cal. 5640 - 602

The Seiko 5640-602 represents an important milestone in Seiko's 1990 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f9cb02274cb5]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1990

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