Seiko Cal. 5640 - 520

This Solar model from 1976 features a 38mm PVD Black case. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-64995117fed1]

Also known as: Crown, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1976

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