Features: brand new and high quality Using Bluetooth-compatible5.1 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, RCA interface. Upgrade the NFC function, the mobilephone can be connected with one for touch. Support FM transmission, and the frequency approx 2.4GHz-2.48GHz Built-in high-definition microphone, support wireless music listening, hands-free call, navigation. Package Includes: 1PC x Host 1PC x 3.5mm Audio Cable 1PC x RCA Audio Cable 1PC x Power Cord 1PC x Manual Specifications: Bluetooth-compatible Solution: 5.0 EDR, A2DP, HSP, AVRCP Charging voltage: for DC 5V Bluetooth-compatible receiving function: connect 1 phone Item Size: approx 6.9x6.9x2.4cm or 2.72x2.72x0.94in Color: Black Features: NFC quick Connection note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.