Seiko Cal. 6331 - 780

This Spring Drive model from 1985 features a 37mm Two-Tone case. It features a Silver dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-4a6c893fb9b6]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1985

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