Music Adapter & Player: Wireless Bluetooth FM transmitter adapter support Bluetooth /USB /TF card. With anti-interference performance and CVC technology.Listening to music while charging. Automatically connect memorized paired when powered on. More Compatibility: The Bluetooth cigarette lighter adapter can transfer calling/MP3 Music/audio. Compatible with iPhone,iPad, Samsung and other Bluetooth devices. You can enjoy music, podcasts, audiobooks, voice navigation from the car radio. Handsfree Call: The car Bluetooth adapter built-in microphone and switche to hands-free mode automatically from music playing status when have call. Answer/Reject/Hand up/Recall all in One key that enables hands-free calling while driving. Dual USB Car Charger: This Bluetooth car adapter has 2 USB charging ports. Input 12V/24V. This is especially useful for long drives or when you rely on your mobile device for navigation or music streaming. Car Battery Voltage and Portability: The car aux Bluetooth adapter