Seiko Cal. 3817 - 198

The Seiko 3817-198 represents an important milestone in Seiko's 1973 lineup. Powered by the 3817 caliber with 28j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-78b50faad948]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1973

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