Features: Versatile Charging Solution: The car chargers adapter is equipped with a 5V/3.1A quick charging port and a 3-in-1 charging cable (maximum output power of 15.5W). You can conveniently charge multiple devices simultaneously, thanks to the spiral cable that is extendable for easy access. Safety and Smarts Features: With its LED intelligent digital display and built-in power management chip, the transmitter offers six safety protections, ensuring secure charging by safeguarding against overload, overvoltage/undervoltage, overcurrent, overheating, and short circuits. Clear Hands-Free Calling: Stay connected and focused on the road with the transmitter's hands-free calling feature. It comes with a built-in microphone for clear and smooth conversations. Answer, reject, or redial calls effortlessly with just one click, enhancing safety during your journey. U-disk Playback: Enjoys your favorite musics hassle-free with the transmitter's support for plug-and-play U-disk functionality. Compatible with MP3 and WMA formats, simply tune your car radio to the BT MP3 channel for musics playback. Intelligent Memory Function: Never miss a note with the memory function. It will memorise the frequency and the song, and the track will begin playing from the first line of the song that was disconnected after the track is powered off and restarted. Say goodbye to manually searching for your favorite songs or adjusting frequencies every time you starts your engine. Stylish Design: It is compatible with most 12-24V mainstream vehicle models, such as sedans, pickup trucks, RVs and SUVs. It Features a vibrant LED breathing light, adding a cool and stylish touching to your car interior. Specifications: Color: Black Material: ABS Working Voltage: 12-24V Operating Voltage Limit: 9-30V USB Output: Max. 5V/3.1A Type-C Output: 5V/3.1A Compatible Audio Format: MP3/WMA SNR: >60dB Distortion: <0.1% BT Version: BT5.0 BT Transmission Distance: 5 Meters FM Frequency: 87.5-108.0MHz Cable Length: up to 1.2 Meters Item Size: 37 * 29 * 75mm/ 1.5 * 1.1 * 3.0in Item Weight: 52g/ 1.8oz Package Size: 123 * 62 * 42mm/ 4.8 * 2.4 * 1.7in Package Weight: 70g/ 2.5oz Packing List: 1 * BT FM Transmitter 1 * Manual