Seiko Cal. 5257 - 721

This Hand-Winding model from 1988 features a 44mm PVD Black case. Powered by the 5257 caliber with 28j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-2884e47a24e6]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1988

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