Seiko Cal. 6631 - 210

This Automatic model from 1991 features a 35mm PVD Black case. It features a Navy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-b6a7588fcd7b]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1991

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