Why you need this FM transmitter Charge three devices at once and keep your phone, tablet, or GPS powered during drives. Stream lossless audio from modern wireless sources to older car stereos that only accept FM. Switch between USB, radio, and wireless modes without interrupting playback. Key benefits and features Triple-equipment power solution: double USB ports plus a Type-C port allow simultaneous charging of three devices. Compatible with QC and PD protocols for efficient, faster power delivery to supported devices. Optimized wireless performance: FM and Wireless 5.0 modules provide stable, low-loss audio transmission and adjustable frequency tuning so you can match your car radio for clearer sound. Adaptable music options: play music from wireless sources, a USB flash drive, or radio input. Seamless mode switching and multi-source compatibility mean uninterrupted audio whether you use streaming or local files. Compact, hassle-free design: plug-and-play operation and a space-saving footprint make it easy to install and remove without tools or extra setup. Fits neatly in any vehicle power port while maintaining reliable functionality. Compatibility and performance Works with devices that support QC and PD charging standards for efficient power delivery. Wireless 5.0 and FM modules enable stable audio transmission even in environments with variable signal quality. Adjustable FM frequency tuning helps avoid interference and pair with a wide range of car radios. Practical use scenarios Daily commute: Keep your phone charged via the Type-C port while streaming navigation audio and music through your car stereo using Wireless 5.0 and FM transmission. Long road trip: Charge two passenger devices and a tablet simultaneously with the double USB and Type-C ports while playing a USB flash drive or radio station for continuous music. Rideshare or professional driving: Provide passengers with consistent audio and charging access; switch quickly between radio, USB, and wireless sources to match rider preferences. What you can expect Reliable, simultaneous charging for three devices. Consistent wireless audio streaming to car stereos without replacing factory head units. Simple installation and straightforward controls for everyday use.