Seiko Cal. 3821 - 276

The Seiko 3821-276 represents an important milestone in Seiko's 1970 lineup. Powered by the 3821 caliber with 36j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-f0875bcc3d4d]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1970

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