Seiko Cal. 5257 - 237

The Seiko 5257-237 represents an important milestone in Seiko's 1979 lineup. Powered by the 5257 caliber with 17j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-da94c6c2e6d8]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1979

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