Seiko Cal. 6381 - 233

The 6381-233 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-a53fd9bacd5b]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1974

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