Bluetooth 5.0 Audio Receiver Transmitter 3.5mm AUX Jack RCA USB Dongle Stereo Wireless Adapter with Mic For Car TV PC Headphone Features: 1.Excellent Adapter: This portable, lightweight wireless audio transmitter and receiver is the ideal wireless audio solution for every situation and application. 2.Transmitter Mode: Wirelessly transfer audio from non-Bluetooth TV, home stereo system or CD player to Bluetooth headset or speaker. 3.Receiver Mode: Wirelessly transfer audio from Bluetooth-enabled mobile phones, tablets or computers to wired stereo speakers or headphones. 4.Two Mode to Switch: Switch between transmitter and receiver modes with a single press of a button. Easily connect by using advanced Bluetooth technology and 3.5mm audio cable (included). 5.Convenient and Easy to Carry: The KN3 is only 44 mm (1.73 inches) and the weight is only 18 grams (0.63 inches), but has a powerful wireless audio streaming capability. You can put it into your backpack or laptop bag. 6.Wide Compatibility: This receiver transmitter adapter can be widely used for your computer, laptop, home stereo system, headset, smart phone, Mp3 player, CD player, etc. Specifications >stand by: BT5.0, A2DP, AVRCP (receiver mode only) >Operation Range: Up to 10m / 33ft (without any blocking objects) >Dimensions: 44 × 44 × 12mm >Weight: 18g Package Contents: 1x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1x Micro USB Power Cable 1x RCA Cable(If you choose with RCA option) 1x 3.5mm Aux Cable 1x User Manual