Seiko Cal. 6651 - 433

The Seiko 6651-433 represents an important milestone in Seiko's 1969 lineup. Powered by the 6651 caliber with 25j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-334616c3c4ef]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1969

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