Seiko Cal. 4425 - 978

This Solar model from 1987 features a 40mm Hardlex-Coated Steel case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-b6dbb8b4d1e7]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1987

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