Seiko Cal. 3871 - 366

The Seiko 3871-366 represents an important milestone in Seiko's 1990 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-43fe76924889]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1990

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