Seiko Cal. 3898 - 821

The Seiko 3898-821 represents an important milestone in Seiko's 1971 lineup. Powered by the 3898 caliber with 29j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-c95293a4648e]

Also known as: Tuna, Sea Horse

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1971

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