Seiko Cal. 0731 - 670

This Kinetic model from 1991 features a 41mm Two-Tone case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-87ba9e42ad66]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

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