Seiko Cal. 5660 - 873

This Spring Drive model from 1970 features a 44mm PVD Black case. Powered by the 5660 caliber with 20j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-061f037bc18b]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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