Seiko Cal. 5661 - 870

Released in 1999, the Cal. 5661 with design code 870 was part of Seiko's domestic market collection. With its 19mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-e88bb601ea74]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1999

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