A. Product Name: NFC Multifunctional Bluetooth Adapter B. Product Version: Standard Edition / Remote - controlled Edition C. Bluetooth Version: Bluetooth V5.0 D. Battery: 3.7V/500mAh E. Usage Duration: Approximately 10 hours of music playback and 30 hours of standby F. Transmission Range: 10 meters (without obstacles) G. Interface: 3.5mm Audio Interface / 2RCA Interface H. Input Parameters: DC 5V - 2.1A (maximum) I. Supported Protocols: A2DP/AVRCP J. Usage Mode: Free - drive K. Product Material: High - strength Fire - resistant PC L. Basic Functions: Bluetooth Reception, Bluetooth Transmission, U - disk Playback, TF Card Playback, Infrared Remote Control, Button Operation, NFC M. Supported Devices: Various Speakers, Desktop Computers, Laptop Computers, TVs, Power Amplifiers, Projectors N. Color: Black O. Material: Plastic P. Package Contents: - 1 Bluetooth Adapter - 1 3.5MM Audio Cable - 1 3.5mm to RCA Audio Cable - 1 USB Cable - 1 Remote Control Q. Only the above package contents are included, and other products are not included. R. Note: Light reflection and different displays may cause slight differences between the item color and the actual color. A measurement error of plus or minus 1 - 3 centimeters is allowed.