Seiko Cal. 5681 - 433

The Seiko 5681-433 represents an important milestone in Seiko's 1981 lineup. Powered by the 5681 caliber with 25j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-0182dea63ab8]

Also known as: Sumo, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

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