Seiko Cal. 6366 - 642

The Seiko 6366-642 represents an important milestone in Seiko's 1969 lineup. Powered by the 6366 caliber with 31j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-97e752907d30]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1969

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