Seiko Cal. 6636 - 985

The Seiko 6636-985 represents an important milestone in Seiko's 1982 lineup. Powered by the 6636 caliber with 18j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-6dae181d263b]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1982

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