Seiko Cal. 5665 - 156

Released in 1982, the Cal. 5665 with design code 156 was part of Seiko's domestic market collection. With its 22mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-e3bd70bed3f7]

Also known as: Sumo, Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1982

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