Seiko Cal. 3820 - 662

This Spring Drive model from 1971 features a 39mm PVD Black case. Powered by the 3820 caliber with 33j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-deaae2530a80]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1971

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