Seiko Cal. 6684 - 665

This Quartz model from 1978 features a 42mm Titanium case. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-ff2e478d7ad0]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1978

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