2-in-1 design, receiver mode: wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones (Only support to be paired with one Bluetooth receiver); transmitter mode: wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers. Switch between transmitter and receiver modes with the simple flick of a switch Features Bluetooth 5.0 chip to ensure high fidelity transmission of Bluetooth audio signal for music streaming to those speakers or home stereo systems that does bot have the capability With the included 3.5mm cable and 3.5mm to 2RCA cable, this receiver transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, Cars with AUX-in and 3.5mm connector No need to download driver, plug and play Specifications: Model: JEDX-KN326 Technology: BT5.0, A2DP, AVRCP (receiver mode only) Operation Distance: 10M Chargign Time: 2 hours Battery Type: 200mAh Lithium polymer Product Size: 44x44x12mm Product Weight: 18g RX: Receive mode, indicator: blue LED TX: Transmit mode, indicator light: red LED