Inner ear-type telephone pickup for telephone conversations can even be used for mobile phones. Just connect the TP-8 to your digital recorder and insert the earphone in your ear, and you will be ready to record telephone conversations. This product is convenient for interviews over the phone. When speaking on the telephone, the TP-8 acts as a microphone to capture both sides of the dialogue onto a voice recorder. Ear pads in three sizes (S/M/L) are included to ensure a long-lasting, comfortable fit.