Seiko Cal. 6643 - 992

The 6643-992 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6643 caliber with 27j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-62f3a1cecc7a]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1985

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