Seiko Cal. 4431 - 578

The 4431-578 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4431 caliber with 25j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-618d87b7048e]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1977

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