Item Type: BT Transmitter Receiver_x000D_ Material: ABS_x000D_ Technology: BT5.0, A2DP, AVRCP (Receiver Mode Only)_x000D_ Operating Range: Up to 10m/33ft(Without Any Obstructions)_x000D_ Pairing Name (Receiver Mode): KN320_x000D_ Transmitter Mode: Red LED Lights Up_x000D_ Receiver Mode: Blue LED Lights Up 1Strong Applicability: This extremely portable wireless audio transmitter and receiver is an ideal wireless audio solution, suitable for various situation and uses. 2Transmitter Mode: Wirelessly transmit audio from a non BT TV, home stereo system or CD player to a BT headset or speaker. 3Receiver Mode: Wirelessly transmit audio from BT enabled mobile phones, tablets or computers to wired stereo, speakers or headphones. 4Portable: There is a powerful wireless audio streaming function. Put this transmitter and receiver into your backpack or laptop bag and carry it with you effortlessly. 5Extensive Compatibility: This receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smart phone, Mp3 player, CD player, etc. 1 xBTTransmitter Receiver 1 x Manual 1 x Audio Cable