Instruct: Classify the given Amazon review into its appropriate rating category
Query: convenient and easy to use

Easy to set up and use. So nice to have a Bluetooth transmitter instead of a cable. Can sync to multiple phones. My daughter likes to use it when she's in my car. Haven't used the call feature much, but for transmitting playlists, podcasts, etc off my phone, it works great. Clear sound, doesn't seem to be any delay.