Description:This is a wireless car fm transmitter radio adapter and it is compatible withenabled devices, like iPhone, iPad, iPod, Tablet, Smartphones or MP3, MP4 Players. Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise. With 2 usb ports to charge most USB devices and built-in microphone supports hands-free talking.Features: - Color: Black- Material: PC- Size: 15.3x4x8cm- Bluethooth Version: 3.0- In put Voltage: 12V- 24V- Out put Voltage: 5V- Out put Power: 5V / 2.1A, 5V / 1A-Profile: A2DP, HSP, AVRCP- Supported Audio Format: MP3/WMA/FLAC- FM Frequency Range: 87.5-108.0MHz- Frequency Response: 20Hz-20KHz- Effective Distance: Up to 5m / 16ft- Utilized most advanced interference and noise cancellation technology, it owns good sound and performs well in handfree mode.- Comes with 2 charging ports to charge most USB devices; built-in microphone supports hands-free talking.- Support smart phone A2DP function to play great sound music after connecting by .- Automatically detection of battery voltage after turn-on. Support TF expansion to play music of MP3 / WMA format- AUX Port supports in-put and out-put. Support showing music name on display screen.