Description: Universal compatibility: Accept 3 different audio inputs: bluetooth; AUX port for both input and output; or TF cardup to 64GB. One-click heavy BASS,24H time display.The bluetooth wireless car radio adapter is compatible with IOS,Android,smartphones and more. Hands-free Calls:Bluetooth V5.0 provides a faster and more stable connection.Clear hands-free calling and voice navigation. Easy to answer/redial/hang up or reject calls via the multifunctional button.Support power-off memory. Fast Charging with 2 USB Ports: Designed with PD 18W and QC3.0 quick charge port ,enables you to charge 2 devices simultaneously . Siri: Bluetooth FM transmitter supports voice commands to ensure safe driving. You can use intelligent Siri to make phone calls, get driving directions or voice navigation, make your driving easier, safer and more convenient. Safety Feature: Supports input over-voltage protection, output over-current protection, output short-circuit protection, over-temperature protection.Safety first,equipped with a voltmeter to show you the condition of your car battery. Specification: Rated working voltage: 12V~24V Ultimate working voltage: 10-26V USB port: QC3.0 (maximum 18W) Type-c: PD3.0 (maximum 18W) Support playback format: MP3/WMA/WAV/FLAC Bluetooth transmission distance: less than 10M Bluetooth microphone effective distance: 0.5-2M FM transmitting frequency: 87.5MHz-108.0MHz Size Chart: Size:4.8×2.6×2cm/1.89×1.00.79×2inch Package Includes: 1 Piece Bluebooth Car FM Transmitter 1 Piece External Microphone 1 Piece Audio Line 1 Piece English Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 3. Wish you a wonderful on-line shopping!