Seiko Cal. 5643 - 965

The Seiko 5643-965 represents an important milestone in Seiko's 1968 lineup. Powered by the 5643 caliber with 18j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-80a3566a2c3a]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1968

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