Features:This product is a car-specific bluetooth-compatibe hands-free adapter MP3 player.Using high-performance professional-grade bluetooth-compatibe 5.0 chipYou can use your bluetooth-compatibe connection to transmit MP3 music from your phone to your car stereo via wireless transmissionYou can also use hands-free calling.You don'for t need to modify your car to make it easy for you to enjoy the music while you're on the road.Specifications: Material:ABS+PCBluetooth-compatibe distance: Barrier-free 10 metersSupported file types: MP3/WMA/FLAC/WAV/APEFM transmission frequency: 87.5-108Mhzfor LAUNCH distance: <5 metersSize:Approx.4.5x4.5cm/1.77x1.77inNet Weight:55gPackage Includes: 1x Aux ReceiverNote: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.