Inner ear type telephone pickup for telephone conversations that can even be used for mobile phones. Just connect the TP8 to your digital recorder and insert the earphone in an ear and you are ready to clearly record telephone conversations. This product is convenient for interviews over the phone. Type: Electret condenser microphone. Frequency response: 50 to 16000Hz. Output impedance: 2,2 kOhm, Power supply: Plug in /1,5 to 10V/. Plug: 3,5mm mono jack. Cord length: 1,5m. Weight: 8g. Accessories: Earpiece (S/M/L x1 each)