High Definition Support None: Designed for clear, uninterrupted audio without high definition support, ideal for in-car entertainment Interface - USB Power Supply: Easy-to-use USB interface for convenient power supply, compatible with 5V car and charger ports Multifunctional M Button: User-friendly M button for seamless control of playback, calls, and FM frequency adjustments Wireless Type - FM & Bluetooth: Dual-mode functionality with FM transmitter and Bluetooth-compatible for versatile audio streaming Usb Fm Transmitter/Usb Fm Transmitter Bluetooth/Bluetooth-compatible version V5.3: Equipped with cutting-edge Bluetooth-compatible V5.3 for stable, ultra-fast connections with devices Product name: usb bluetooth-compatible Receiver FM transmitter Product model: FM02 Bluetooth-compatible version: V5.3 Working voltage: 5V Effective probability: within 10 meters Audio output: FM transmitter Default frequency: 95.0MHZ Signal to noise ratio: equal 95db Answer the call: support Automatic return: support Power supply mode: usb power supply (5V) Color:Black Material:ABS Package Contents: 2 * FM transmitter 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.