【2 in 1 Bluetooth Transmitter Receiver 】OQIMAX Bluetooth aux adapter can connect to old car audio system, home audio system, speaker, and wired headphone. Using the aux Bluetooth adapter in receive mode, wired devices can play the music that is on your phone; In transmitter mode, Bluetooth devices can receive the sound that on the wired devices. | 【Enjoy Wireless Streaming Music】This Bluetooth receiver supports A2DP, AVRCP, and adopts CVC noise reduction technology, removes noise, and make the sound clear. Converting non-bluetooth devices to bluetooth devices for wireless connection, suitable for cars, speakers, stereos and headphones. Get yourself freedom from the tangle of audio cables, to enjoy music wherever. | 【Bluetooth 5.0】Wireless audio adapter, adopts Bluetooth 5.0 chips, has stable connection and fast transmission, offera better quality wireless audio experience while listening to music or making calls. The Bluetooth music receiver maintains a strong connection up to 33ft without obstacles (walls, doors, Wi-Fi routers, Wireless TV adapter, etc.) | 【East to Use】Insert the Bluetooth receiver into the AUX port, and connect your Bluetooth device throught Bluetooth. A built-in microphone and Multifunction Button to answer / redial / hang up / reject calls. Make you enjoy complete hands-free calling during driving. | 【Auto Reconnection & Portable】 Bluetooth car adapter can automatically pair with the last connected phone after powered on. Bluetooth 5.0 Music Audio Receiver will enter pairing mode if the Bluetooth of the last phone is unsearchable. The Product size is small (64*37*12mm, weight 11g) and it is easy to carry.