Seiko Cal. 4431 - 643

Released in 1998, the Cal. 4431 with design code 643 was part of Seiko's domestic market collection. With its 21mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-15bb2fe61c0e]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1998

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