Seiko Cal. 3821 - 509

The Seiko 3821-509 represents an important milestone in Seiko's 1965 lineup. Powered by the 3821 caliber with 27j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-8b6e74a02204]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1965

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