【Advanced Bluetooth-compatible 5.3 Technology】Enjoy seamless connectivity and improved audio quality with the latest Bluetooth-compatible 5.3 technology for your car audio system. 【Versatile Charging Protocols】Supports a wide range of fast-charging protocols including QC3.0, QC2.0, PD, for Huawei FCP, for Samsung AFC, BC1.2, and for Apple 2.4A for efficient device charging on the go. 【Multifunctional FM Transmitter】Transmit audio via Bluetooth-compatible or FM, supporting hands-free calls, voice commands, music playback, and navigation for a safer driving experience. 【Comprehensive Safety Features】Equipped with multiple protection mechanisms including output overvoltage, short circuit, overcurrent, and overtemperature safeguards for worry-free usage. 【Auto-Reconnect Function】Conveniently reconnects to your paired device automatically, ensuring a hassle-free start to your journey every time. 【High-Power Output】Delivers up to 54W of power output, capable of fast-charging multiple devices simultaneously while on the road. Specifications: Bluetooth-compatible Version: 5.3 FM Frequency Range: 87.5 MHz - 108.0 MHz Bluetooth-compatible Effective Range: 10 meters QC3.0 Output: 5V/3A, 9V/2A, 12V/1.5A PD Output: 5V/3A, 9V/3A, 12V/3A, PPS: 3.3V-11V/3A Input Voltage: 12V-24V Maximum Output Power: 54W