Seiko Cal. 5661 - 870

The Seiko 5661-870 represents an important milestone in Seiko's 1979 lineup. Powered by the 5661 caliber with 33j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-44bd90b3f0e4]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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