2-in-1 Bluetooth Adapter - This bluetooth transmitter and receiver features TX and RX modes. In TX mode, the TV can directly establish a connection with the wireless Bluetooth headset, no need to worry about affecting your family. In RX mode, the normal stereo is immediately upgraded to Bluetooth speakers, no need to worry about the cable.3 Playback Modes - This Bluetooth audio adapter supports 3 playback modes, including Bluetooth, U-Disk and TF card. Simply double click the multi-function button to effortlessly switch between different playback modes. At home, you can play music directly through U-Disk or TF card, and when travelling, we can utilize Bluetooth to connect with smart devices wirelessly, enjoying high-quality music experience at any time.Bluetooth 5.4 Technology - With the latest Bluetooth v5.4 chipset, this Bluetooth aux adapter offers longer range and stable connection with data transmission up to 10 metres. Additionally, the device includes an auto-reconnect feature that allows it to seamlessly reconnect with previously paired devices.Rechargeable - With a Type-C fast charging port, this 3.5mm Bluetooth AUX adapter charges fully in just 2 hour, offering up to 6 hours of continuous use. It supports charging while in use. Pairing this bluetooth aux adapter with your smartphone, laptop or Bluetooth stereo and Bluetooth headphones to enjoy your favorite music.Hands-Free Calling - This bluetooth receiver 3.5mm jack not only supports high-quality hands-free calling, but is also compatible with navigation and voice broadcasting. When driving, it can quickly answer or hang up a call by double-tapping the button and navigation information is clearly delivered through the adapter, allowing drivers to focus on the road.