OQIMAX 2 IN 1 Bluetooth transmitter receiver can wireless-enable your TV, car audio, wired speaker or headphone to receive audio wireless from your smartphone, laptop, tablet, MP3, etc. How to Pair? Pair in TX mode: 1. Use the AUX cable to connect the B-10S to your device with audio output 2. Change the switch button to the TX position 3. Turn on the device (long press the multi-function button) and the red light will flash quickly, indicating that it is ready to pair. 4. Turn on the device to be connected, B-10S will automatically connect, after the connection is successful, the Bluetooth indicator will light up in red. Pair in RX mode: 1. Use the AUX cable to connect the B-10S to device with audio output. 2. Change the switch button to the RX position 3. Turn on the device (long press the multi-function button) and the blue light will flash quickly, indicating that it is ready to pair 4. Find B-10S in the Bluetooth search of the mobile phone, and then select pairing Specification: Bluetooth version:5.0 Supported protocol:A2DP, AVRCP BT Range: up to 33feet (open space) Charging Time: about 2H Working Time: 4-6H Charging input voltage: DC 5V Input/Output connecting mode:3.5mm audio port Package Included: 1 x Bluetooth transmitter and receiver 1 x 3.5mm Cable 1 x Charging Cable 1 x User Manual See more?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. ?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. ?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.). ?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. ?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.