Description: This is a wireless car transmitter radio adapter and it is compatible with enabled 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: ABS - Size: 111 x 8.5 x 2.5cm - Bluethooth Version: 4.1+EDR - Input Voltage: 12V- 24V - Dual USB Output: 5V/3.4A - Support card - Frequency Range: 87.5-108.0MHz - Cable length: 100cm - Utilized most advanced interference and noise cancellation technology, it owns good sound and performs well in handfree mode. - Comes with 2 USB charging ports to charge most USB devices; built-in microphone supports hands-free talking. - Support phone A2DP function to play great sound after connecting . - Automatically detection of battery voltage after turn-on. Support expansion to play of MP3 / WMA format - AUX Port supports in-put and out-put. Support showing name on display screen. 1 x car transmitter 1 x user manual 1 x cable