Seiko Cal. 4431 - 291

The 4431-291 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-3359966a3ab3]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

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