So after I bought my Sharp Gf777 recently I started looking around for blank cassettes to copy music onto because all of my cassettes are buried in storage right now. While searching online for cassettes (because no place near me sells them anymore), I came across this marvelous invention. The Ion Bluetooth Cassette Adapter, allows me to stream music from my phone to my box looking like I am playing a cassette. I made the Polaroid Label to make it look a bit more authentic. I highly suggest this little device, well worth the $20 I paid for it.