Seiko Cal. 6257 - 320

This Spring Drive model from 1973 features a 46mm Stainless Steel case. Powered by the 6257 caliber with 31j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-528af81d5146]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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