Seiko Cal. 6636 - 401

The Seiko 6636-401 represents an important milestone in Seiko's 1995 lineup. Powered by the 6636 caliber with 18j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-d071f8e6c1b1]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1995

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