Seiko Cal. 5681 - 977

This Hand-Winding model from 1969 features a 43mm PVD Black case. Powered by the 5681 caliber with 27j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-742f4cbb996d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1969

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