Seiko Cal. 6640 - 732

Seiko 6640-732

This Automatic model from 1985 features a 46mm Two-Tone case. Powered by the 6640 caliber with 29j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-13e1a888ce02]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
46mm
Case Thickness
13.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Burgundy
Jewels
29j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1985

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