Seiko Cal. 3877 - 656

Released in 1984, the Cal. 3877 with design code 656 was part of Seiko's domestic market collection. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-718dfb33ff44]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1984

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