Seiko Cal. 4477 - 637

Released in 1986, the Cal. 4477 with design code 637 was part of Seiko's domestic market collection. With its 22mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-104ef1692ba8]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1986

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