Seiko Cal. 5638 - 857

This Solar model from 1968 features a 43mm PVD Black case. It features a Burgundy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-0824844dafbc]

Also known as: Sumo, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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