Seiko Cal. 0740 - 640

This Spring Drive model from 1977 features a 40mm Two-Tone case. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-992069be5016]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1977

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