Seiko Cal. 6643 - 842

Seiko 6643-842

This Automatic model from 1978 features a 46mm PVD Black case. Powered by the 6643 caliber with 25j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-7290044926b3]

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
46mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
190m
Dial Color
White
Jewels
25j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1978

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seikata-wm-7290044926b3