HIGH AUDIO QUALITY & LOW LATENCE: This Bluetooth audio adapter supports Bluetooth transmitter mode and Bluetooth receiver mode. Adopts Bluetooth 5.4 technology to ensure stable signal transmission and let you enjoy lossless sound quality. Support SBC HD decoding, high sampling rate, clear sound quality, eliminate noise and current sound.HANDS-FREE CALLING, SAFE DRIVING: Bluetooth receiver with 3.5mm AUX interface is perfect for plugging into your car stereo to share music on the go. Supports echo cancellation and noise suppression technology, deep noise reduction, built-in microphone, one-touch answer and hang up. Let you stay focused and never miss an intersection again.PLUG & PLAY, EASY TO USE: Simply turn on the Bluetooth transmitter receiver and connect to the wired device via the 3.5mm AUX port, then pair it with your Bluetooth device in seconds. Support 33ft distance stable and smooth wireless music transmission. This Bluetooth transmitter receiver is super mini size and supports play while charging. Size: 1.5*0.6*0.27inches.14 HOURS BATTERY LIFE & DISPLAY: The Bluetooth transmitter receiver is equipped with an LED digital display that clearly shows the volume, pairing mode (TX/RX) and battery level. After powering on, short press the multi-function button to check the battery level in real time, short press the < > button to switch between next/previous song, long press the previous/next track to adjust the volume.WIDE COMPATIBILITY: This Bluetooth audio transmitter receiver allows you to enjoy seamless compatibility with wired speakers/headphones, home stereo systems, car stereo systems, computers, projectors, MP3/MP4 players, airplane in-flight entertainment systems, televisions, treadmills, Bluetooth earphones/earbuds and other audio streaming sound systems.