Seiko Cal. 0730 - 353

This Spring Drive model from 1980 features a 34mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-ef87cd335507]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1980

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