Adafruit Bone Conductor Transducer with Wires - 8 Ohm 1 Watt [ADA1674]
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Adafruit
{"Brand": "Adafruit", "Item Weight": "0.02 Pounds", "Package Dimensions": "2.83 x 2.05 x 0.39 inches", "Manufacturer": "Adafruit", "Is Discontinued By Manufacturer": "No", "Date First Available": "April 27, 2016", "Speaker Maximum Output Power": "1 Watts", "Impedance": "8 Ohm"}