Seiko Cal. 5257 - 350

The Seiko 5257-350 represents an important milestone in Seiko's 1978 lineup. Powered by the 5257 caliber with 36j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-edadef65200b]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1978

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