Seiko Cal. 6331 - 910

This Automatic model from 1985 features a 43mm Two-Tone case. With its 18mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-2afa4efca6a9]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1985

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