Seiko Cal. 5666 - 441

The Seiko 5666-441 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-dba323c3bfe3]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1975

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