Product informationRead moreCompact Design The high-density integration process integrates powerful features and long battery life, creating a pocket size that is extremely portable and must be taken anywhere.Charging During Use Type-C port greatly improves charging time.It only takes 2.5 hours to fully charge.At the same time, you can also charge while using it without disturbing you while enjoying music.Remaining Battery Display After connecting to the phone, you can visually see the remaining power of the Bluetooth receiver, which is convenient for you to grasp the status of the Bluetooth receiver.Read morePairing steps for the second Bluetooth device: 1. Turn off the Bluetooth of the first smart device and the receiver will enter pairing mode again.2. Search for "J22" in the Bluetooth function of the second smart device and connect.3. Reopen the Bluetooth of the first smart device and reconnect J22 in the pairing history.4. Then the double connection is finished.J22 Bluetooth Adapter Car (Silver)J22 Bluetooth Adapter Car (Gray)J35 Bluetooth adapter carBluetooth versionV5.0 V5.0 V5.0Conversion methodAUX to Bluetooth AUX to Bluetooth AUX to BluetoothMusic playback modesBluetooth Bluetooth BluetoothLightBlue ring light Blue ring light Blue ring lightPower on/off buttonMFB MFB MFB