Seiko Cal. 3821 - 506

The Seiko 3821-506 represents an important milestone in Seiko's 1972 lineup. Powered by the 3821 caliber with 31j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-293f20cfbb04]

Also known as: UFO, Rally

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1972

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