Check the listing for details. Bluetooth Wireless FM Transmitter Car MP3 Player Radio Adapter USB Charger. Color: Black, Condition: New. Listed at 18.04 USD. Description1. Best music lossless transfer in the market. FM Transmitter achieve the stereo music lossless transfer to your car speaker, to grant most crystal sound quality. Please be noted, due to radio frequency interference and car ground loop noise, it is almost impossible for any transmitter to produce a perfect audio, but it does one of the best work in the market.2. Super Clear Large Screen.The 1.4 inches large screen will show incoming call number , volume, FM frequency and song name if you play music from TF card or USB flash disk.3. Charge Your Devices Easily. With a 5V/2.1A USB charging port, you can charge your phone or other devices in fast speed.4. Remote Control & Music Playing Support with 21-key remote control for the FM Transmitter, everyone in car can control music playing or calls freely.5. Hands Free & Safely Drive. Built-in microphone feature can set free your hands during answer the calls and help you safely drive. Specifications:Version: Version 4.1Frequency: 20Hz-15KhzLitmied voltage: 9-26VUSB Charging Port Output: 5V/2.1ASupport File Format: WAV, MP3, WMAVoltage: 5 V + / - 0.5Effective Range: 10metersTransmit Frequency: 87.5-108MHz Package included:1*FM Transmitter1*Remote Controller1*Aux Cable1*User Manual