Seiko Cal. 5661 - 670

This Kinetic model from 1981 features a 37mm Titanium case. Powered by the 5661 caliber with 18j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-cb072128c727]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1981

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