Upgrade your car's audio and add wireless convenience with this 2-in-1 Bluetooth adapter! It works as both a receiver (RX mode) and transmitter (TX mode), so you can connect your smartphone to older car stereos or wired headphones via Bluetooth, or transmit audio from TVs, planes, or computers to your Bluetooth headphones/speakers. It uses the latest Bluetooth 5.3 for a stable connection and up to 33 feet range. The built-in microphone and CVC 8.0 noise cancellation technology filter out background noise like wind or traffic, giving you clear hands-free calls and voice navigation prompts. It also has an \MFB\ button to answer/end calls and control music. The flexible 3.5mm aux plug fits easily into tight spaces and protects the port. With a built-in battery, it offers about 6 hours of use and recharges quickly in 1.5 hours via the included Type-C cable. Perfect for older cars without built-in Bluetooth, home stereos, wired headphones, or in-flight entertainment systems. Easy to set up—just plug it in, pair your device, and enjoy wireless audio and calls. A small gadget that makes a huge difference in your daily drive or travel. Stay connected, entertained, and hands-free safely!