Features: brand new and high quality Using Bluetooth-compatible5.2 QCC chip design, for stronger compatibility and stability. Bluetooth-compatible receiving (RX), Bluetooth-compatible transmitting (TX), TF Player AUX 3.5 design. Built-in digital to analog chip, support digital optical fiber, coaxial, AUX interface. Upgrade the Adaptive function, the mobilephone can be connected with one for touch. Support FM transmission, and the frequency approx 2.4GHz Built-in high-definition microphone, support wireless music listening, hands-free call, navigation. Specifications: Bluetooth-compatible Solution: 5.2 APTX APTXLL HFP, AVRCP HD- Adaptive Frequency:2400（MHz） Charging voltage: for DC 5V Bluetooth-compatible receiving function: connect 1 phone Item Size: approx Mixed Color: Black Package Includes: 1PC x Host 1PC x 3.5mm Audio Cable 1PC x Audio Cable 1PC x Power Cord 1PC x Manual note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions.