Seiko Cal. 5661 - 276

The Seiko 5661-276 represents an important milestone in Seiko's 1989 lineup. With its 20mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-59228ae89aee]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1989

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