Seiko Cal. 4556 - 758

This Quartz model from 1978 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-d54828a9f875]

Also known as: Helmet, Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1978

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