Using Bluetooth 5.0 chip design, stronger compatibility and stability. Upgrade the NFC function, the mobile phone can be connected with one touch.Bluetooth receiving (RX), Bluetooth transmitting (TX), FM transmitting three-in-one design. Equipped with high-definition LED digital display, working status and Bluetooth mode are clearly visible.Built-in digital to analog chip, support digital optical fiber, coaxial, AUX, RCA interface.Cool breathing light, red/blue color, soft and not dazzling.Built-in 500mAh rechargeable lithium battery, long battery life.Support USB (U disk), TF card playback and transmission.Support FM transmission, and the frequency can be adjusted from 87.5 to 108.Support 5~8 meters infrared remote control, all kinds of functions are readily available.The product connection is simple, without any cumbersome driving and downloading APP.Product name: NFC Multifunction Bluetooth AdapterProduct model: M6Bluetooth version: Bluetooth V5.0Support protocol: RX: A2DP AVRC TX: A2DPWorking frequency band: 2.402GHz -2.480GHzSensitivity: -85dBm less than 0.1%BERSignal to noise ratio: greater or equal to 90dBScreen size: 36x8MMWorking current: less than 40mABuilt-in battery: 3.7V/500mAhCharging current: about 400mACharging time: about 2 hoursLife time: RX about 10H, TX about 8HBluetooth distance: less than or equal to 10M (open place)Charging method: -USB 5V/0.5AInterface type: Input: 3.5mm AUX RCA Optical Coaxial USB TF interface; Output: 3.5mm AUX RCASupport format: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTYCompatible devices: Android, IOS system mobile phones and PAD, wired speakers, power amplifiers, and Bluetooth speakers or headphones that support A2DP/protocol are connected foruse.Colour: BlackMaterial: ABSPackage Contents:1 * Bluetooth adapter1 * 3.5MM cable1 * 3.5mm-RCA cable1 * -USB cable1 * Remote Control1 * English manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 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.