Seiko Cal. 5257 - 397

The 5257-397 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5257 caliber with 19j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-cfad7ea2608a]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1975

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