Seiko Cal. 5257 - 539

This Kinetic model from 1966 features a 46mm Stainless Steel case. Powered by the 5257 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-a77e99ae0d15]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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