Bluetooth Transmitter and Receiver, YOKKAO Mini Portable Wireless Bluetooth Rechargeable 3.5mm Audio Music Adapter for TV/ Home Sound System Headphones Speakers TRANSMITTER AND RECEIVER - It is a 2 in 1 adapter, built-in 3.0 Bluetooth technology and 3.5mm AUX audio jack. As a transmitter, this device can connect two device and support stereo. You can transmit the audio to from your TV to bluetooth headphones or speakers. As a receiver, you can play the music from your phone or other devices to wired home stereo system. WIDE COMPATIBILITY - Built-in CSR chip, its range can up to 10 meter, supporting protocol is A2DP and AVRCP. it can compatibility with most PAD of Android or IOS system, phone, Bluetooth audio device, stereo system. Working as receiver mode, you can use your earphone plugging in this device to enjoy your favor music. LOW-LATENCY TECHNOLOGY - Built-in AEC cancellation and ANC noise cancellation circuit. Made by using low-latency technology, it supports online games, television, movies, real-time video transmission. It also compatible with lossless audio format which make the video more pure, enjoying you favor music. RECHARGEABLE AND PORTABLE - Built-in rechargeable 300mAh polymer battery inside, under not connection status, 5 minute later, this device will turn off automatically for saving energy. With USB charging cable, you can use phone adapter or connect computer to charging it. Only has 20g(0.044lb), its size is 106x70x30mm( 4.17x2.76x1.18in), easy to carry. OTHER FUNCTIONS - When you open this device, it will auto connect other device automatically. Whats more, it has automatic memory connection function. When you turn on this device, it will auto connect the last paired device automatically.