Seiko Cal. 5221 - 344

This Spring Drive model from 1977 features a 37mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-5623254b1d92]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1977

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