Four playback modes: The FM transmitter supports four different playback modes, including Bluetooth playback, TF card playback, U disk playback, and AUX playback. It is also compatible with a variety of audio formats, including MP3, WMA, WAV, and FLAC.Dual USB charging ports: The FM transmitter is equipped with two USB charging ports, which allow you to charge your devices while you are driving. The power comes from the car cigarette lighter socket, so it is suitable for most cars.High-quality Bluetooth transmitter: The FM transmitter has a high-quality Bluetooth transmitter that provides a stable FM signal and better anti-interference performance. It also has a built-in microphone with echo and noise cancellation technology, which allows for hands-free calling and improved sound quality.Large LCD display: The FM transmitter features a 1.3-inch LED display that shows phone calls, music, and battery voltage. The screen size is designed to be large enough for drivers to view without causing distractions while driving.Universal compatibility and memory function: The FM transmitter is compatible with a range of devices that have Bluetooth functionality, including Samsung smartphones, iPhones, iPads, and tablets. It also has a memory function that automatically connects to the last paired Bluetooth device when powered on.