Seiko Cal. 6381 - 657

This Spring Drive model from 1971 features a 38mm Stainless Steel case. It features a Burgundy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-9927ea987580]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

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