Seiko Cal. 4565 - 640

The Seiko 4565-640 represents an important milestone in Seiko's 1971 lineup. Powered by the 4565 caliber with 36j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-ae6aa78d4a29]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1971

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