1. Charge two devices simultaneously via USB 5V/2.4A and PD: 5V/3A, 9V/2A, 12V/1.5A for efficient charging 2. Large screen display with lossless sound quality; supports TF card playback with lyric display 3. Retractable spring cable design; includes AUX audio output; supports incoming call number announcement; one-button control for answering and ending calls 4. Real-time battery voltage monitoring compatible with various vehicle models for enhanced protection 5. Short press EQ button to adjust subwoofer mode 1. Bluetooth Version: 5.0 with up to 10m wireless transmission range 2. Compatible with 12V-24V vehicles 3. Large LCD screen for improved visibility, especially at night 4. FM transmitter frequency range: 87.5–108.0 MHz (adjustable by pressing the CH button); short press to answer or end calls, long press to reject 5. Enables hands-free wireless calling with built-in microphone for safe and convenient communication 6. Streams music from smartphone to car stereo system via FM transmission 7. Supports TF card playback and plug-and-play AUX audio connection; allows direct phone connection without using Bluetooth, reducing signal interference Note: Slight variations may occur due to different production batches Color: As shown in picture Material: Plastic Package Includes: 1 x Car Hands-Free FM Transmitter Note: Lighting effects and monitor settings may cause slight color differences between images and actual product. Measurement may vary by ±1-3 cm.