Seiko Cal. 4557 - 797

The 4557-797 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4557 caliber with 17j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-185ef39c76e3]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1990

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