Seiko Cal. 5640 - 365

This Solar model from 1982 features a 38mm PVD Black case. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-bee1c3be2d43]

Also known as: Tuna, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1982

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