Seiko Cal. 6636 - 656

The Seiko 6636-656 represents an important milestone in Seiko's 1996 lineup. Powered by the 6636 caliber with 25j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-5513a4fa89e2]

Also known as: Monster, Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1996

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