Features: Bluetooth 5.0: Bluetooth 5.0 technology offers high quality audio sound, both in playing music and answering calls; A combination of lossless audio transmission and noise cancelling technology ensures that music and phone calls are delivered with superb clarity and precision. Hi-Fi stereo audio, clear and good sound effect. Easy and simple to upgrade your old-style speaker or car stereo system to Bluetooth hands-free wireless audio. Multi-Function & Hands-Free: Play, Pause, Previous song, Next song; Answer and reject calls; High quality microphone is built in to the receiver unit, the hands-free car kit provides a simple solution for answering and receiving phone calls and streaming music from your Bluetooth enabled phones while on the going. Safe Driving: High quality microphone is built in the unit, when someone is calling while you are driving, simply press the phone call button and speak with both hands on the wheel, which ensure you safe driving. Support TF card MP3 music play. Directly plug and play. FM Transmitter: Support FM frequency 87.5, 95.0 and 108.0 mhz. If your car does not have 3.5mm Aux-in port, you can use it as a FM transmiter to enjoy music from your cell phone or tablets through your car or home stereo speaker system. Wide Compatibility: Compatible with for iOS, for Android and for Windows. Supports for Siri/ for Google voice. Work with any system that has AUX 3.5mm headphone input jack such as cars or home audio systems, av receiver, amplifier. Quick pairing through Bluetooth devices. Specifications: Connectivity: Bluetooth, AUX, FM USB Input: 5V Bluetooth Version: V5.0 Bluetooth Transmission Distance: 10M Transmitting Frequency : 87.5~108.0MHZ TF Card: 32G (not included Audio Format: MP3/WAV/FLAC/APE/WMA Spring Wire Length: 1.2M Package include: 1 x Bluetooth Receiver Transmitter