BT600 USB Wireless Audio 2 in 1 Bluetooth 5.0 Receiver & Transmitter Adapter Specifications: 1. Technology: BT5.0, AVRCP (receiver mode only), A2DP 2. Operating range: max. 10 m 33 ft (no barrier) 3. Pairing name (receiving mode): BT600 4. Transmitter mode: red LED light is on 5. Receiver mode: blue LED light is on 6. Product size: 32*17*10mm 7. Net weight: 15g ?? Packing list: - 1 x Bluetooth 5.0 Audio TransmitterReceiver Adapter - 1 x 3.5mm dual head audio cable - 1 x Chinese and English manual ?? Features: 1. This portable and lightweight wireless audio transmitter and receiver is the ideal wireless audio Bluetooth transmission solution for every situation and application. 2. Transmitter mode: Wirelessly transmits audio from non-Bluetooth TVs, home stereo systems or CD players to Bluetooth headsets or speakers. 3. Receiver mode: Wirelessly transfer audio from a Bluetooth-enabled phone, tablet or computer to cable stereo, speakers or headphones. 4. This product is compatible with most Bluetooth protocol products on the market, with low output delay and stable performance. Widely used in computer laptop tablet home stereo system headset smart phone MP3 player and CD player and so on.