Seiko Cal. 5257 - 221

Released in 1984, the Cal. 5257 with design code 221 was part of Seiko's domestic market collection. Powered by the 5257 caliber with 30j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-89ba1dfda026]

Also known as: Tuna, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1984

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