Frequency Response: Transmission frequency can be set from within the range of 87 ~ 108MHz 15W high-low power-adjustable, the transmission distance of 3-4 km (1.9-2.5 mi) in the open air.FCC certified. FCC ID: 2AQIX-T15B | Channel switching: switchable stereo, mono Designed with advanced modulation system and built-in PLL frequency, audio pre-emphasis, limiter, and low-pass filter circuit. | High-fidelity Wireless: you can connect wirelessly to mobile phones, tablets and other Wireless devices Good heat dissipation: using high-quality dual ball bearing fan, reasonable heat dissipation channels, excellent thermal performance. | PC control: connect your computer via micro USB interface, plus supporting intelligent broadcasting software, to achieve diversification unattended broadcast. (time switch, time to play the specified music, etc) 1/4 wavelength of strong magnetic sucker antenna, can be tightly adsorbed on the car roof or any metal flat objects, easy to move the antenna to the outside, the roof, balcony or window, more effective transmission and reception of electron. | Excellent Heat Dissipation: Aluminum alloy metal shell, good cooling effect, quiet fan With PC control, Intelligent Broadcast.

2 PORTS USB CAR CHARGER : Support charging two devices simultaneously, one port is Quick Charge 3.0 port （compatible with: QC2.0, Hua Wei FCP, Type-C and Samsung.）, and the matching smart IC can automatically match the current. | ANSWER CALLS HANDS-FREE:High-performance microphone with Noise Suppression (CVC) technology, grants you crystal clear call. Answering/redialing/dismissing or ending call just simply click a button. | IMMERSE IN HiFi MUSIC: Insert a USB flash drive which contains MP3 files into the "RIGHT" USB port and enjoys it. If that's not enough, it can also support your playlist with a full range of audible frequencies with no distortions of the original signal from your MP3, iPhone, Android Smartphones and more wireless enabled devices. | SUPER EASY TO PAIR WITH WIRELESS: Plug the Wireless FM transmitter into your vehicle's 12V power port or cigarette lighter and tune radio to the same frequency as transmitter, then pair your device via wireless | Wide Compatibility & Memory Function - Fit for all wireless enabled devices such as iPhone, iPad, iPod, Tablet, and other Android Smartphones. Also it will auto-connect to its memorized paired Wireless device when power on.