Description: Using Bluetooth 5.0 chip design, it has stronger compatibility and stability. Upgraded NFC function, the mobile phone can be connected with one touch. Three-in-one design of Bluetooth receiving (RX), Bluetooth transmitting (TX), and FM transmission. Equipped with high-definition LED digital display, the working status and Bluetooth mode are clearly visible. Built-in digital-analog chip, supports digital optical fiber, coaxial, AUX, RCA. Cool breathing light, red and blue color, soft and non-glaring. Built-in 500mAh rechargeable lithium battery with long battery life. Supports USB (U disk) and TF card playback and transmission. Supports FM transmission, the frequency is adjustable from 87.5 to 108. Supports infrared remote control from 5 to 8 meters, and has all kinds of functions. Product connection is simple, without any cumbersome specifications: Product name: NFC multi-function Bluetooth adapter Product model: M6 Bluetooth version: Bluetooth V5.0 Support protocol: RX: A2DP AVRC TX: A2DP Working frequency band: 2.402GHz -2.480GHz Sensitivity: -85dBm Signal-to-noise ratio: 90dB Screen size: 36*8MM Working current: Built-in battery: 3.7V/500mAh Charging current: about 400mA Charging time: about 2 hours Battery life: RX about 10H, TX about 8H Bluetooth distance: 10M (open space) Charging method: Micro USB 5V/0.5A Interface type: Input: 3.5mm AUX+RCA+Optical+Coaxial+USB+TF interface; Output: 3.5mm AUX+RCA Supported formats: MP3/WAV/WMA/APE/FLAC/G729 /M4A/ALAC/AMR/DTS/MIDI/G726/MTY compatible devices: Android and IOS system mobile phones can be used by connecting to PAD, wired speakers, power amplifiers and Bluetooth speakers or headphones that support A2DP/protocol. Package includes: 1x Bluetooth adapter. 1x 3.5MM wire. 1X 3.5 mm-RCA cable 1x Micro USB cable 1x remote control. 1x User Manual.