Seiko Cal. 5661 - 310

The 5661-310 is a sought-after Automatic piece from Seiko's golden era. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-086dd6aa15cf]

Also known as: Sea Horse, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1973

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