Description 1. Upgrade: Instantly add wireless audio to your existing car stereo and listen to your favorite songs and podcasts from your smartphone, tablet and other devices 2. Easy to use: Convenient music control with the multifunction button and the track skip buttons. Built-in microphone for hands-free calls through your car stereo speakers 3.Mobile phone USB charging: Includes a 2-port USB car charger to power this receiver and charge your smartphone and other USB devices 4. Bluetooth 4.0: Fast, easy and energy-efficient connection for all compatible devices with a wireless range of up to 10 m. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.