Seiko Cal. 4431 - 273

The 4431-273 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4431 caliber with 30j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-0ab121dbc101]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1999

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