Seiko Cal. 3821 - 902

The Seiko 3821-902 represents an important milestone in Seiko's 1966 lineup. Powered by the 3821 caliber with 21j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-f0ab1e0c9f6d]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1966

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