Seiko Cal. 6630 - 983

This Solar model from 1968 features a 36mm Titanium case. Powered by the 6630 caliber with 30j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-a5df8ec540e1]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1968

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