Satechi Bluetooth Hands-free Car Stereo FM Transmitter - Compatible with iPhone XS Max/XS/XR/X, iPad Pro/Air, Samsung Galaxy S9 Plus/S9 and other Bluetoooth-enabled devices Compatibility: iPhone 6, 5S, 5C, 5, 4S, 4, 3Gs & 3G (OS 3.0 or newer Software Update required) iPod Touch 4G, iPad, iPad Air, iPad Mini, BlackBerry, HTC EVO, DROID, Samsung Galaxy S5, S4, S3, S2 and all Bluetooth enabled phones for wireless audio streaming and hands-free calling Live, full duplex communication solution: speak and listen at the same time - DSP (Digital Signal Processing) to cancel echo and reduce ambient noise. USB port: Charge USB powered devices, including iPhone 6, 5S, 5C, 5, 4S & 4, 3Gs & 3G, iPod, cell phones, MP3 players, and more. Line out: Allows for direct connection from the device to the Aux port in your car without the need of Fm Transmission. Line-in: Auxiliary Line-in jack to connect other audio devices, including MP3 player, CD player, portable DVD player, PC, laptop, etc.