Long Range: Our 7w fm transmitter has a long range in both low and high power modes.No static signal-whether you are in a high-rise apartment in or snuggling in the foothills of Montana, you will find the clearest channel with amazing sound clarity AUX Input: Connect external devices, such as MP3,CDplayers,Mobilephone,Computer, TVBluetooth or wireless adapter input. MICInput: Allows you to use your own wired microphone (or equip Bluetooth transmitter and receiver microphones) Clear and Stable Signal Transmission: Audio distortion is less than 0.25%, supporting clear, strong and stable signal transmission. PLL Digital Tuner Technology: With advanced PLL digital tuner technology, the FM transmitter has no frequency offset, allowing you to enjoy your own radio station. Technical Parameters: Phase Lock Loop (PLL) System Easily choose your frequency LCD and buttons Freq range: 76MHz~108MHz Power: 7w Ripple or harmonic waves: -60dB Tuning Step: 100khz Stability of Frequency: 5ppm Less than 10ppm ( better system) Freq. Response: -55dB(100~5000Hz); -45dB(5000 ~ 15000Hz) Audio Input Connector: 3.5mm headphone connector Microphone jack; it can be connected wih the microphone RF output connector: TNC Female TNC Type antenna output Reduced harmonic ( clean signal ) Reference range: 1-3Km (A barrier-free environment) : More than 60dB Stereo channels crosstalk: -50dB Audio frequency response: 20 to 15000Hz Audio distortion: Less than 2% Power supply voltage: DC 10-14V (12V recommended) Operating current: Less than 2A Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. voltage: 110V Material: plastic colour: Black Package Contents: 1 x transmitter 1 x Antenna 1 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.