Seiko Cal. 5643 - 425

The Seiko 5643-425 represents an important milestone in Seiko's 1976 lineup. Powered by the 5643 caliber with 25j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-cd6442f7cf9b]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1976

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