Seiko Cal. 5656 - 779

This Spring Drive model from 1965 features a 34mm Two-Tone case. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-87f7e88b1afc]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

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