Larger Display Screen: 1.44 inches screen provides clear display: Song's Name?? Voltage of car battery??incoming phone call number.</br>Voice Prompt: Voice prompt tell you whether connected sucessfully or not.</br>Better Sound quality: CVC Technology creates full duplex sound?? Noise and wind will be suppressed.</br>Faster Charging: 5V/2.1A charging port?? better charging performance.</br>Memory function: Automatically connect the next time if connected once.</br></br>Product Description</br></br><b>Easy Installation</b><br> Plug and play?? Easy to use. <p> <b>Memory Function</b><br> Fast Bluetooth pairing. Once paired?? Auto-connect