Seiko Cal. 3871 - 548

The Seiko 3871-548 represents an important milestone in Seiko's 1965 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-b51a22ef8ad8]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1965

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