Seiko Cal. 5657 - 817

Released in 1977, the Cal. 5657 with design code 817 was part of Seiko's domestic market collection. With its 19mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-ff29fd4874f1]

Also known as: Helmet, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1977

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