Seiko Cal. 4431 - 552

The 4431-552 is a sought-after Solar piece from Seiko's golden era. Powered by the 4431 caliber with 30j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-6740e82f34f8]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1993

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