2-in-1 Bluetooth Audio Transmitter Receiver: Wireless adapter combines bluetooth transmitter and receiver with 3.5mm auxiliary jack. In TX mode, helps you transmit audio from devices like TVs, PCs, and airplane entertainment to your bluetooth headphones, earbuds, or speakers. In RX mode, lets you connect your smartphone to wired speakers or earphones wirelessly from bluetooth | HD & APTX Low Latency: Equipped with upgraded bluetooth 5.3 chipset, so the bluetooth transceiver can provide stable audio and CD quality, enjoy true HD sound quality. With the low latency feature, you can watch videos without any lag while watching movies. Tips: Low latency requires the support of bluetooth headsets or speakers. Low latency does not support RX mode | Dual Link Function: The bluetooth adapter is the solution for dual auxiliary entertainment setup on the plane. You can also connect two wireless headphones to share your music and movies with others | Easy to Use: Make Sure that your bluetooth enabled devices in pairing mode. Slide the BM devices to TX mode. Press and hold the a button for 3s. Place your bluetooth devices near to BM devices and double click the power button to enter pairing mode, usually after about 10 seconds, pairing will be completed | Long Battery Life: The charging time of the bluetooth 5.3 transceiver is about 2 hours, the RX service time is at least 20 hours, and the TX service time can be 12 hours (when fully charged). The bluetooth adapter can also be used while charging, which is very convenient | Wide Compatibility: As a bluetooth audio transmitter (TX mode), convert non-Bluetooth TV, PC, CD player, iPod, laptop, tablet, MP3/MP4 (including but not limited to) to 3.5mm audio jack bluetooth transmitter