1. Support Bluetooth hands-free phone calling via its built-in microphone. 2. Support A2DP function. Music will be played directly while the mobile phone is connected. 3. T45C with dual USB - 5V / 2.4A output, and Type-C output; T45Q with dual USB - USB output + QC3.0 fast charging USB port, both support fast charging, it can charge for most kinds of digital devices in car. 4. With HD display screen. 5. Six colors ambient ring light. 6. Support SD/TF memory card and USB flash drive reading, can play music files on MP3/WMA format. 7. With a support of FM channels, this car MP3 wireless FM transmitter lets you take a break from your regular music. 8. Plug the MP3 player into cigarette lighter of your car directly, easy to use and carry.