Seiko Cal. 4558 - 766

Released in 1976, the Cal. 4558 with design code 766 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-fc04946f3282]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1976

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