Seiko Cal. 5687 - 820

Released in 1982, the Cal. 5687 with design code 820 was part of Seiko's domestic market collection. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-dfe0158add3d]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1982

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