【Bluetooth-compatible Hands-Free Calling】Experience convenient hands-free communication while driving, enhancing safety and ease of use. 【Advanced Audio Processing】Enjoy clear conversations with echo cancellation and noise reduction technology during calls. 【Versatile Connectivity】Supports USB, TF card, and Bluetooth-compatible functionality, offering multiple options for audio playback. 【FM Transmitter】Equipped with stereo Bluetooth-compatible and FM transmission technology for seamless integration with your car's audio system. 【Ambient Lighting】Features a seven-color ambient light to create a pleasant atmosphere in your vehicle. 【Fast Charging Capability】Includes QC3.0 and PD25W charging ports for rapid device charging on the go. 【Auto Memory Function】Automatically remembers your settings and playback position for convenience. Specifications: Bluetooth-compatible Version: 5.3 FM Transmission Frequency: 87.5-108MHz Power Supply: DC 12V-24V (via cigarette lighter socket) Supported Audio Format: MP3 Charging Ports: USB-A (QC3.0 Max), USB-C (PD 25W Max) Combined Charging Output: QC3.0 + PD 25W (Max) Additional Features: Voltage detection, Auto power-off memory function