Seiko Cal. 3821 - 663

The Seiko 3821-663 represents an important milestone in Seiko's 1986 lineup. Powered by the 3821 caliber with 21j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-3672abc82e37]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1986

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