Seiko Cal. 4577 - 681

The Seiko 4577-681 represents an important milestone in Seiko's 1980 lineup. Powered by the 4577 caliber with 36j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-5d1fe9f04fe1]

Also known as: Rally, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1980

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