Seiko Cal. 5643 - 928

The Seiko 5643-928 represents an important milestone in Seiko's 1973 lineup. Powered by the 5643 caliber with 25j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-5ff9eedf8095]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1973

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