Seiko Cal. 5610 - 855

Released in 1971, the Cal. 5610 with design code 855 was part of Seiko's domestic market collection. With its 18mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-ece32ef6c357]

Also known as: Sumo, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1971

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