Seiko Cal. 6391 - 266

This Spring Drive model from 1990 features a 40mm PVD Black case. It features a Cream dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-9b2b24e70ac4]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1990

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