Seiko Cal. 3821 - 378

This Spring Drive model from 1972 features a 45mm PVD Black case. Powered by the 3821 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-d4560a23162c]

Also known as: Shogun, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1972

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