Seiko Cal. 6366 - 850

The Seiko 6366-850 represents an important milestone in Seiko's 1970 lineup. Powered by the 6366 caliber with 35j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-1d1ac12ad24a]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1970

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