Seiko Cal. 5657 - 170

The Seiko 5657-170 represents an important milestone in Seiko's 1978 lineup. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-224e84077979]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1978

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