Description: Bluetooth 5.0 chip design, better compatibility and stability. Bluetooth receiving (RX), Bluetooth transmitting (TX), FM transmitting three-in- design. Equipped with high-definition LED digital display screen, working status and Bluetooth mode can be clearly seen. Built-in digital to analog chip, support digital optical fiber, coaxial, AUX, RCA interface. Upgrade the NFC function, the phone is connected with a touch. Cool breathing light in red/blue, soft and not dazzling. Built-in 500mAh rechargeable lithium battery, long battery life. Support USB(U disk), TF card playback and launch. 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 available. The Built-in HD microphone, support wireless music, hands-free calling, navigation. Product connection is simple, easy to use. Without any driver and download the tedious APP; Specification: Size: 9.5 x 6.5 x 2cm/3.6 x 2.5 x 0.7inch Weight: 75g Bluetooth version: Bluetooth V5.0 Support protocol: RX: A2DP AVRC TX: A2DP Working frequency: 2.402GHz -2.480GHz Sensitivity: -85dBm