Seiko Cal. 3857 - 656

Released in 1966, the Cal. 3857 with design code 656 was part of Seiko's domestic market collection. With its 21mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-55dd0ab453c2]

Also known as: Sumo, Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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