Seiko Cal. 4471 - 728

The Seiko 4471-728 represents an important milestone in Seiko's 1982 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-8e0e768fe461]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1982

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