Seiko Cal. 3861 - 820

The Seiko 3861-820 represents an important milestone in Seiko's 1991 lineup. Powered by the 3861 caliber with 29j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-c00e00c2795f]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1991

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