Blufree FM Transmitter is the easier way to upgrade your car radio and enhance your journey without taking apart your car, which is built to carry crystal audio sound to car radio that with no audio-in capability.
How Car Bluetooth FM Transmitter works?
1.The FM Transmitter is connected to car stereo over an empty channel for the least interference. Press and hold the phone button to enter FM mode and them adjust the frequency.
2.Cell phone is paired with the FM Transmitter via Bluetooth connection for hands free phone call and mobile music, even for GPS audio navigation.
3.MP3 Music play from memory TF/SD Card or USB flash drive.
Multifunctional FM Transmitter Bluetooth for Car, a convenient accessory to make your driving more interested!
Bluetooth receiver function: hands free phone calling and MP3 music streaming.
MP3 Music for Car with Hi-Fi Stereo Sound:
A. Bluetooth enabled devices (cell phone, tablet…)
B. USB flash drive
C. Memory TF/SD Card
Dual USB ports Car Charger which Output 3.4A total: Fast charge your phone and other devices at the same time.
Voltage Detection: The car voltage is showed on the digital display for monitoring easily
Memory Function: Fast Bluetooth pairing. Once paired, the FM transmitter will automatically reconnect with the last paired smart device when turned on next time.
Universal Compatibility: Bluetooth Transmitter works well with most Bluetooth enabled devices, such as iPhone, Android phone, iPad, iPod, tablet and etc.
Excellent service with 90-days money back guarantee.
Package Included:
1 x Bluetooth FM Transmitter with Dual USB Charge Ports
1 x User Manual
I think its useless posting about these items unless someone can vouch for the call quality. Hopefully someone can?