Seiko Cal. 4431 - 691

The 4431-691 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4431 caliber with 36j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-7dcf86ff778e]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1997

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