Seiko Cal. 4577 - 721

The 4577-721 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-4a87dd5eb984]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1991

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