Seiko Cal. 5257 - 804

The 5257-804 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5257 caliber with 20j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-0550619fd0aa]

Also known as: Samurai, Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1976

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