Seiko Cal. 4577 - 720

The Seiko 4577-720 represents an important milestone in Seiko's 1997 lineup. Powered by the 4577 caliber with 20j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-55045cfb9b7c]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1997

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