Seiko Cal. 4577 - 860

The Seiko 4577-860 represents an important milestone in Seiko's 1977 lineup. Powered by the 4577 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-bf3a65355b4c]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1977

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