1、Stereo Clear Sound Quality: The sound quality of cassette player depends on the viability and quality of the tape. Even with long tapes, you can enjoy crystal like sound with FM capabilities. 2、Bluetooth Cassette Player: You can stream tape music to other Bluetooth receivers such as Bluetooth speakers or headphones. The device will automatically search for the Bluetooth receiver, and may need to set up pairing on the Bluetooth receiver when connecting. 3、Auto Reverse Function: The bluetooth cassette player has an auto reverse function, you can use the "DIR" button to quickly flip the tape, and use the left or right "Play Mode" button to reverse once or infinitely. 4、Portable: The FM tape player is compact, allowing you to play and stream music on the go, playing your tape via Bluetooth or the 5mm headphone jack. Clear ABS case, relive fond memories with this retro style music player. 5、Power Supply Mode: The bluetooth tape machine is powered by 2 AA batteries or USB power supply, and the operation is flexible. It can be used when the battery is installed or connected to the power supply, and it is very convenient to use.