Seiko Cal. 5257 - 783

The Seiko 5257-783 represents an important milestone in Seiko's 1973 lineup. Powered by the 5257 caliber with 35j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-af5edc1b5449]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1973

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