This Telex Copyette Tape Copier Duplicator is a vintage cassette deck duplicator that has been tested and is in working condition. It is a Mono Model 300350000 that can duplicate cassette tapes. This item is perfect for those who want to preserve their old cassette tapes or make copies of them. The Telex brand is known for producing quality audio equipment and this cassette duplicator is no exception. It is a great addition to any vintage electronics collection. Includes power cord and manual and vintage catalog.