Seiko Cal. 4571 - 520

The Seiko 4571-520 represents an important milestone in Seiko's 1980 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-bc88cddbd0bd]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1980

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