****about us*****1. Product transportation: Our logistics is safe and efficient. After payment, we guarantee to ship as soon as possible.2. Product quality: We will strictly control the quality of our products. Our shop has a complete range of products and provides you with more choices3. Product support service: If you have any questions about the product, you can directly contact the pre-sales or after-sales service, our service team will reply as soon as possible, and the best service will provide you with a satisfactory purchase****Product Description****1. Using Bluetooth 5.0 chip design, higher compatibility and stability.2. Bluetooth receiver (RX), Bluetooth transmitter (TX), FM transmitter with three-in-one design.3. Equipped with high-definition LED digital display, working status and Bluetooth mode are clear at a glance.4. Integrated digital-analog chip, compatible with digital optical fiber, coaxial, AUX, RCA interface.5. Update the NFC function, the mobile phone can be connected with one key.6. Cool breathing light, red/blue color, soft and not dazzling.7. Built-in 500mAh rechargeable lithium battery, the battery is durable8. Support USB (U disk), TF card playback and transmission.9. Support FM transmission, frequency 87.5-108 adjustable.10. Support 58 meters infrared remote control, all kinds of functions are readily available.11. Built-in high-definition microphone, supports wireless music listening, hands-free calling and navigation.12. The product connection is simple, without any cumbersome driving and discharging applications;Product parameters: ProductsModel: M6Bluetooth version: Bluetooth V5.0 supportProtocol: RX: A2DP AVRC TX: A2DPWorking frequency band: 2.402GHz -2.480GHz powerClass: Power Class 2 (Class II)Sensitivity: 85dBmBERSignal-to-noise ratio: 90dBDistortion: 0.1%Interface type input: 3.5mm AUX RCAOptical coaxial USB TF interface USB interface type output: 3.5mm AUX RCA optical fiber parameters: support optical input, 16M, sampling rate 99 kHz supportFormat: MP3/WAV/WMA/APE / FLAC / G729 / M4A / ALAC / AMR / DTS / MIDI / G726 / MTYScreen size: 36 * 8MMWorking current: 40 mABuilt-in battery: 3, 7 V / 500 mAhCharging current: about 400 mACharging time: about 2 hours.Endurance time: RX is about 10H, TX is about8H Bluetooth distance: 10M (open place)Charging method: Micro USB 5V/0.5ACompatible devices: Android, IOS and PAD system mobile phones, active speakers, power amplifiers and Bluetooth speakers or earphones that support A2DP protocol to connect and usepacking list:Bluetooth host adapter x1Micro USB chargingCable x1 3.5mm audio cable x1Red and white RCA lotus line x1Manual x1