Seiko Cal. 5643 - 651

The Seiko 5643-651 represents an important milestone in Seiko's 1968 lineup. Powered by the 5643 caliber with 34j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-ed16198711a3]

Also known as: Rally, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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