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ROCK B300 Bluetooth FM Transmitter | Modern Connectivity for Your Car Bluetooth 4.2 – Seamless connection with Android and iOS devices. Dual USB Ports – Charge up to two devices simultaneously with smart current distribution. FM Transmitter – Stream your favorite music directly from your phone to your car stereo. Hands-free Calling – Stay safe with crystal-clear voice calls while driving. Advanced Features Navigation Broadcast – Compatible with popular apps like Google Maps and Baidu Maps. U Disk Support – Plug and play audio formats such as MP3, WAV, FLAC, and more. Reliable Performance Voltage Detection – Built-in display to monitor your car battery status...

ROCK B301 FM Bluetooth Transmitter with 36W Charger | Advanced Connectivity and Fast Charging Bluetooth 5.0 – Stable transmission and support for dual-device connection. Dual USB Ports + Type-C – Supports fast charging with PD 20W and QC 3.0. Hands-free Function – Built-in microphone ensures clear calls. Supports U-Disk and TF Card Playback – Compatible with MP3, WAV, FLAC, APE, WMA formats. Smart Features Automatic switching between music and calls. Voice Navigation Support – Compatible with Google Maps and other apps. Performance and Design Stylish design with illuminated LED display. One-button operation – Control volume, tracks, and calls effortlessly. Compatibility...