Seiko Cal. 4425 - 963

This Solar model from 1978 features a 39mm Stainless Steel case. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2df3996f878e]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1978

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