Specification: Bluetooth version: 5.0; Function: Bluetooth audio receiving and transmitting in one; Built-in noise reduction HIFI sound quality; Transmission signal distance: 15m; Fully compatible with automatic matching; Battery: 300 mAh Input interface: 3.5mm; Input voltage: DC/5V; Support hands-free calling LCD screen display No need to drive, plug and play; Package includes: 1 x Bluetooth audio receiver transmitter 1 x 3.5mm audio cable 1 x Charging cable 1 x Manual 1. LCD DISPLAY: Compared with other transmitter and receiver without screen, this Visible Bluetooth Transmitter and Receiver is easier to conenct and use. The Bluetooth name will be displayed on the display, you can choose freely, which is more convenient and will not be connected by mistake. 2. BLUETOOTH 5. 0 RECEIVER: Installed with Bluetooth 5. 0 chip, new wireless music receiver has an unrivalled performance with 2 times faster transmission speed, stronger connection stability and wider signal range of 10M than the older version. 3. BLUETOOTH COMPATIBLE: This audio Bluetooth adapter support 3.5mm aux audio, and also compatible with all smartphones, bluetooth audio devices (Bluetooth headphones, Bluetooth speakers and much more). 4. TRANSMITTER RECEIVER MODE: 2in1 design, by using this wireless adapter, you can send and receive all of the audio freely and easily. Transmitter enables your TV, AV Receiver, Radio and other home audio source devices to stream music to your Bluetooth headphones or speakers; Receiver lets non-Bluetooth devices like your home stereo or AV Receiver and wirelessly stream music from your cellphone/PC. 5. Portable Design&Plug & Play: The compact bluetooth adapter is small, lightweight and easy to carry. Bluetooth transmitter and receiver without installing any external driver. Long press the multi-function button to turn on and off the machine. When there is an incoming call in receiving mode, press the button to receive the call hands-free.