Seiko Cal. 4598 - 640

The Seiko 4598-640 represents an important milestone in Seiko's 1974 lineup. Powered by the 4598 caliber with 33j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-1b2f50f992c3]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1974

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