1. Supports Bluetooth hands-free phone calls via its built-in microphone. 2. Noise and wind suppressed by CVC technology to create full duplex sound quality. 3. Support mobile's A2DP function. Music will be played directly while the mobile phone is connected. 4. Auto pairing once it turns on. memory function will automatically connect to its the last paired Bluetooth devices when powered on next time. 5. Support MP3/WMA/FLAC from TF card. 6. T11 will come with car charger, output 5V-2.1A, is available for charging handheld devices in car, and reads flash USB.