Seiko Cal. 0721 - 523

This Quartz model from 1975 features a 37mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-8f7ceb81e21b]

Also known as: Helmet, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1975

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