Seiko Cal. 3831 - 757

This Spring Drive model from 1965 features a 38mm Two-Tone case. It features a Navy dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-778b54307753]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1965

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