Seiko Cal. 6331 - 707

This Quartz model from 1986 features a 37mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-1de85d5b812c]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1986

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