Seiko Cal. 3874 - 689

The Seiko 3874-689 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-1ab57ce6597c]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1972

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