High-performance telephone pickup RP-953, ideal for improving sound quality. - Model Name: RP-953 - Brand: National - Application: High-performance telephone pickup - Included items: Instruction manual Thank you for viewing. This is a rather old item. It's a cord that connects a black telephone to a radio cassette recorder, allowing you to record calls. It's new and has never been used. #RetroAppliances #BlackTelephone #RecordingCord