Seiko Cal. 5681 - 655

The 5681-655 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-c4ea348b701f]

Also known as: Sumo, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1965

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