3 in 1 Wireless Audio Adapter Bluetooth Receiver Transmitter with Mic 3.5MM AUX HIFI Stereo Music LED Display for Car PC Using Bluetooth 5.3 chip design, stronger compatibility and stability. Bluetooth Receiving (RX), Bluetooth Transmitting (TX), FM Transmitting 3 IN 1 design. Equipped with high-definition LED digital display, working status and Bluetooth mode are clearly visible. Built-in 300mAh rechargeable lithium battery, long battery life,which is convenient and worry-free. Support FM transmission, and the frequency can be adjusted from 87.5-107.9MHz.Quickly connect to the car through FM frequency modulation, which is more convenient and faster to use. Built-in high-definition microphone, support wireless music listening, hands-free call, navigation.(Note:TX Transmitter Mode is not supported Microphone) Lossless sound quality CD-level enjoyment: high-resolution restoration of lossless sound quality, bringing CD-level music experience. Receiver Mode For: Car Kit/Wired Speaker/Home Speaker/Speaker Power amplifier/Headphone ect... Transmitter Mode For: TV/PC/Projector/Power amplifier/TV Box /Bluetooth Headphone/Earphone/Bluetooth Speaker ect... FM Transmitter Mode For Car Kit, Built-in Mic Support HD Handsfree Calling. Product Model: 3 IN 1 Wireless Audio Adapter Bluetooth Version: V5.3+EDR Battery Capacity: 300Amh Working Range: 10m (without any obstacles) Charging Time: 1-2 hours Music Time: 8-10 hours Standby Time: 90 days Support Protocol: A2DP/AVRCP/HFP/SBC Audio Interface: 3.5mm AUX Stereo Support Mic: Yes, RX&FM Mode With Mic Handsfree Calling (TX Transmitter Mode is not supported Mic) Colour:White Material:plastic Package Contents: 1 x Bluetooth Audio Adapter Only the above package content, other products are not included. Note: Light reflection 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.