Seiko Cal. 5657 - 803

The Seiko 5657-803 represents an important milestone in Seiko's 1965 lineup. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-c209ad3f3aff]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1965

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