Seiko Cal. 6630 - 990

This Quartz model from 1971 features a 36mm Titanium case. It features a Silver dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-c44550dabb04]

Also known as: World Timer, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

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