Seiko Cal. 5640 - 758

The Seiko 5640-758 represents an important milestone in Seiko's 1976 lineup. It features a Cream dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-baa8ff35760e]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1976

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