Seiko Cal. 6331 - 813

This Quartz model from 1981 features a 39mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-85ed16df46d2]

Also known as: Monster, Panda

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1981

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