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ProTechTrader Crystal Earphone High Impedance Piezoelectric Ceramic (Model: ch905)
High impedance crystal earphone (piezoelectric ceramic). Perfect for crystal radio kits, electronics...
ProTechTrader Crystal Radio Ear Phone High Impedance Piezoelectric (Model: ch905-3.5mm)
Piezoelectric earphones also known as crystal earphones, ceramic earphone, and piezo earpieces are t...
ProTechTrader Piezoelectric Ear Phone High Impedance Ceramic Piezo - 3.5mm Plug (Model: Piezo-Brass-Black-3.5mm)
High impedance piezoelectric earphone with 3.5mm plug. Upgraded brass diaphragm. For crystal radios ...
ProTechTrader Piezoelectric Ear Phone High Impedance Ceramic Piezo - Bare Wire Leads (Model: Piezo-Brass-Black-Bare)
High impedance piezoelectric earphone with bare wire leads. Upgraded brass diaphragm model. Perfect ...
