Seiko Cal. 6642 - 975

The 6642-975 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6642 caliber with 33j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-877e9fe8680e]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1976

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