Turn your car stereo into a reliable Bluetooth hub for music and calls while keeping devices charged and audio clear. Key benefits Stable Bluetooth 5.0 connection: stream music and place hands calls from your smartphone with faster pairing and improved signal stability compared to older Bluetooth versions. Dual USB charging ports: charge two devices at once so phones, GPS units or tablets stay powered during trips. Clear FM transmission with selectable frequencies: pick the FM channel to avoid interference and deliver crisp audio through your car's radio. Builtin microphone with noise reduction: make safer, more convenient hands calls with improved voice clarity and reduced background noise. What it solves Eliminates the need for wired aux cables or specialized car stereos — connect your phone wirelessly and play audio through any FMequipped car radio. Keeps multiple devices charged when power outlets are limited. Reduces call noise and radio interference so conversations and music are clearer and less distracting while driving. Function and compatibility Function: Bluetooth 5.0 wireless music streaming and hands calling, FM transmitter to send audio to car radio, two USB ports for charging, integrated microphone with noise reduction. Compatibility: Works with smartphones that support Bluetooth and with car stereos that accept FM radio reception. No special app or stereo modification required. Size and design: Compact plugin adapter designed to fit standard car power sockets (cigarette lighterstyle). Light, portable and easy to install or remove. Durability and performance: Built for regular incar use with reliable wireless performance and multiple FM frequency options to minimize interference. Typical use scenarios Daily commute: Stream navigation prompts and playlists from your phone to your car radio, while keeping your phone and passenger device charged for the ride. Hands calling on the go: Take business or family calls clearly using the builtin microphone with noise reduction, keeping both hands on the wheel and eyes on the road. Road trips and rideshare driving: Play quality audio through the vehicle stereo and charge multiple devices simultaneously so passengers stay connected. Quick features summary Bluetooth 5.0 for stable, fast wireless connection FM transmitter with multiple selectable frequencies to reduce interference Two USB charging ports for simultaneous charging of two devices Builtin microphone with noise reduction for hands calling Compact plugin design for standard car power sockets Practical, straightforward, and easy to use — adds wireless music and safer calling to any car stereo with an FM radio while keeping devices charged.