Charge two devices simultaneously via USB 5V/2.4A and PD: 5V/3A, 9V/2A, 12V/1.5A for efficient charging Large screen display with lossless sound quality; supports TF card playback with lyric display Retractable spring cable design; includes AUX o output, incoming call number announcement, and one-key answering and hanging up Real-time battery voltage monitoring compatible with various car models for enhanced protection Short press EQ button to adjust subwoofer mode Bluetooth Version: 5.0 with 10m transmission range Compatible with 12V-24V vehicles Equipped with large LCD screen for improved night visibility FM transmitter frequency range: 87.5–108.0 MHz (adjustable by pressing the CH button) Wireless hands-free calling with built-in microphone for safe and convenient call management (short press to answer/end, long press to reject) Streams music from smartphone to car stereo system via FM transmission Supports TF card playback and plug-and-play AUX o connection; allows direct phone connection without Bluetooth, reducing signal interference Note: Slight variations may occur due to different production batches Color: As shown in photo Material: Plastic Package Includes: 1 x Car hands-free FM transmitter Contents limited to items listed above; other accessories not included Note: Lighting effects and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3 cm