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CH905ST
Ultra-sensitive earphones with 20K ohm impedance and 57 dB sensitivity.
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From $2.75 /unit
Piezoelectric Earphones/Crystal Earphones
Ultra-sensitive earphones with 20K ohm impedance and 57 dB sensitivity.
Fine Iron Filings, 8 Oz, 1/2 Pound, 227 grams
3D magnetic field experimentation with safe-keeping screw cap.
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