Seiko Cal. 6643 - 992

Seiko 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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