Seiko Cal. 3821 - 525

The Seiko 3821-525 represents an important milestone in Seiko's 1988 lineup. Powered by the 3821 caliber with 34j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-5406a396dbbc]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1988

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