Seiko Cal. 6643 - 642

Seiko 6643-642

This Automatic model from 1983 features a 45mm Hardlex-Coated Steel case. Powered by the 6643 caliber with 28j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-7bc93c5d6f62]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
13.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Green
Jewels
28j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1983

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