Seiko Cal. 5257 - 568

Released in 1977, the Cal. 5257 with design code 568 was part of Seiko's domestic market collection. Powered by the 5257 caliber with 32j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-08cc6dab656c]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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