Seiko Cal. 4577 - 720

Seiko 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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