Seiko Cal. 5657 - 161

The Seiko 5657-161 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-3bae5aee6955]

Also known as: Monster, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

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