Seiko Cal. 6642 - 535

The Seiko 6642-535 represents an important milestone in Seiko's 1972 lineup. Powered by the 6642 caliber with 22j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-86ca0fb410b1]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1972

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