Seiko Cal. 4451 - 663

This Spring Drive model from 1971 features a 36mm Titanium case. It features a Silver dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-25416a97863a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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