Features:_x000D_1.Using Bluetooth-Compatible 5.0 chip design, compatibility and stability are stronger._x000D_2.Three-in-one design of BT single receiving, BT single transmitting and FM transmitting._x000D_3.Equipped with a high-definition LED digital display, the working status and BT mode are clearly visible._x000D_4.Built-in digital to analog chip, support digital optical fiber, coaxial, AUX, RCA interface._x000D_5.Support USB U disk, TF card playback and launch._x000D_6.Support FM transmission, and the frequency can be adjusted from 87.5108._x000D_7.Support 58 meters infrared remote control, all kinds of functions are readily available._x000D_8.Built-in high-definition microphone, support wireless listening to songs, hands-free calling, and navigation._x000D_9.The product connection is simple, without any cumbersome driving and downloading APP;_x000D_Notice:_x000D_Actual color may be slightly different from the image due to different display and light effect._x000D_Please allow 1-3cm deviation due to manual measurement.Bluetooth-Compatible version: V5.0_x000D_Supported protocols: AVRC, A2DP_x000D_Working frequency band: 2.402GHz -2.480GHz_x000D_Power class: Power class 2 Class II_x000D_Sensitivity: -85dBmSignal-to-noise ratio: 90dB_x000D_Distortion: 0.1_x000D_Interface type: as follows_x000D_Input: 3.5mm, AUXRCAOpticalCoaxialUSBTF_x000D_Output: 3.5mm, AUXRCA_x000D_Screen size: 36*8MM_x000D_Working current: Built-in battery: 3.7V/500mAh_x000D_Charging current: about 400mA_x000D_Charging time: about 2 hours_x000D_Charging method: Micro USB 5V/0.5A_x000D_Product size: 92*65*20mm_x000D_Remote Control: battery includedPackage List:_x000D_1 set of Transmitter