PD 20W + QC 3.0 Fast Charging: Experience high-speed charging with the two USB fast charging ports designed to power your mobile phone and tablet. This car Bluetooth FM transmitter features a USB C fast charging port that can charge your iPhone 11/12 from 0% to 80% in just 40 minutes. Additionally, the USB 3.0 port provides charging speeds up to 4 times faster than standard chargers. An extra USB charging port (5V/1A) is also available, which can double as a USB flash drive port for music playback. Multiple Music Playback Options and Bluetooth Connectivity: Enjoy versatile music playback options with this Bluetooth transmitter. Connect your devices via Bluetooth, TF card, or U disk to stream music effortlessly. The car Bluetooth FM transmitter utilizes Bluetooth 5.0 technology for low-latency and stable connections during music playback and hands-free calls. The TF card slot ensures non-destructive sound quality playback, delivering crystal clear sound and satisfying even the most discerning ears. Clear Hands-Free Calls and Voice Assistants: Stay connected with the built-in high-performance noise-cancelling microphone, providing clearer and smoother hands-free calls. Compatible with popular devices such as iPad, iPhone, Samsung, Google, LG, HTC, and more, this car Bluetooth FM transmitter supports voice assistants like Siri and Google voice navigation. Its user-friendly design allows for easy operation, featuring one-key automatic tuning for answering and hanging up calls. Voltage Warning Function for Enhanced Safety: Compatible with all 12V-24V vehicles, including cars, trucks, and SUVs, this car Bluetooth FM transmitter includes an LCD screen that displays the current FM radio station and monitors the battery voltage in real-time. The voltage warning function helps you keep track of your car battery's health, effectively preventing potential issues and ensuring your driving safety. 7-Color LED Backlight and Excellent Customer Service: Immerse yourself in a vibrant music atmosphere with the car Bluetooth FM transmitter's 7-color LED backlight. This feature not only adds excitement to your journey but also helps alleviate driving fatigue. Additionally, we offer warm and reliable customer service to assist you with any questions or concerns throughout your usage of the car Bluetooth FM transmitter. Upgrade your driving experience with the versatile features of this car Bluetooth FM transmitter, including fast charging, various music playback options, hands-free calls, voltage monitoring, and colorful LED backlighting. Enjoy convenience, safety, and entertainment on your journeys.