Seiko Cal. 3873 - 639

The Seiko 3873-639 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-2e309aa940ea]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1972

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