Seiko Cal. 4563 - 377

The 4563-377 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4563 caliber with 17j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-0667580c88e8]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1975

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