Seiko Cal. 4480 - 640

This Quartz model from 1968 features a 46mm Titanium case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-8d96ee37d1a1]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1968

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