Seiko Cal. 3828 - 821

The Seiko 3828-821 represents an important milestone in Seiko's 1970 lineup. Powered by the 3828 caliber with 19j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-c07d0cdaa018]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1970

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