Seiko Cal. 5257 - 978

The Seiko 5257-978 represents an important milestone in Seiko's 1970 lineup. Powered by the 5257 caliber with 36j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-5961f0f1f833]

Also known as: Samurai, Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1970

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