Features: Adopt Bluetooth 5.0 chip design, which has stronger compatibility and stability. Two-in-one design of Bluetooth receiving (RX) and Bluetooth transmitting (TX), toggle switch for quick switching. Equipped with a high-definition LED digital display screen, the working status and Bluetooth mode are clearly visible. Built-in digital-to-analog chip, supports six signal interfaces of digital optical fiber, coaxial, AUX, RCA, U disk, and TF card. Upgrade the NFC function, and the mobile phone can be connected with one touch. Cool breathing light, red/blue dual-color, soft and not dazzling. Built-in 500mAh rechargeable lithium battery, long battery life Support USB (U disk), TF card playback and launch. Support 5~8 meters infrared remote control, all kinds of functions are readily available. Built-in high-definition microphone, support wireless music listening, hands-free calling, navigation. The product connection is simple, without any cumbersome drive and APP download;parameter:Bluetooth version: Bluetooth V5.0Support protocol: RX: A2DP AVRC TX: A2DPWorking frequency band: 2.402GHz -2.480GHzPower level: Power level 2 (Class II)Sensitivity: -85dBm