Seiko Cal. 5681 - 977

Released in 1978, the Cal. 5681 with design code 977 was part of Seiko's domestic market collection. With its 20mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-ab09ecb99af2]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1978

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