Welcome to our store! Bluetooth receiver and transmitter Bluetooth 2-in-1 provides TX/RX mode. In TX mode, it can transmit sound from incompatible Bluetooth TVs to Bluetooth devices, such as transmitting headphones. In RX mode, it can be audio from Bluetooth devices, such as transferring the phone to a Bluetooth disabled stereo device. If you want to change the mode, there is no need to turn off the device. Bluetooth hands-free call: In receive mode, this product supports Bluetooth hands-free calls. When there is an incoming call, press the multifunction button to answer the call; During a call, press the multifunction button to hang up; After connecting, double-click the multifunction button to redial at the end of the call. Extended compatibility: The Bluetooth adapter includes 3.5mm cables and 3.5mm to 2RCA cables. This transceiver adapter can be widely used in your computer, laptop, high fidelity system, headphones, smartphones, MP3 players, CD players, and more. Automatic re coupling: Simply press the switch and set it to the desired mode to quickly and easily establish a connection. The internal battery ensures that the Bluetooth adapter can be used for up to 8 hours and is immediately connected to the paired device. Bluetooth transceiver, with wider compatibility, faster transmission speed, and better sound quality. 250mA lithium-ion battery and portable design: Adopting a 250mA long-life lithium-ion battery, it can play continuously for more than 8 hours and be fully charged within about 2 hours. Free use of cables, with a maximum wireless distance of 10 meters. The compact Bluetooth adapter is small in size, lightweight, and easy to carry. Bluetooth transmitter and receiver, no need to install external drivers. 100% satisfaction: Our customers are our top priority. If you find any product issues, such as damage and incorrect quantity, after receiving the goods, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service