Seiko Cal. 4485 - 650

This Spring Drive model from 1976 features a 40mm Gold-Plated case. It features a Navy dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-d840060a48e0]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1976

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