The Boss 611UAB is a single Din mechless car receiver that has USB, SD ports, front AUX and Radio built-in. The car receiver features an active-matrix display monitor, illuminated buttons and equalizer presets, along with built-in hands-free Bluetooth and tuner preset. This car audio receiver is incredibly powerful, omitting a whopping 50-Watt x 4 Max power straight to your speakers. This digital media receiver is compatible with the audio output from smartphones and MP3 players alike, plus it's a really safe option. Other radios and audio setups require manual work, but this model has Bluetooth capabilities, so you can make adjustments and change songs with your voice. Get the most out of your vehicle's audio performance with the Boss 611UAB Single Din USB/SD AUX Bluetooth Multimedia Radio Car Stereo Receiver.