Item Type: Bluetooth Transmitter Receiver Material: Plastic Model: KN326 Technology: BT5.0, A2DP, AVRCP (Receiver Mode Only) Operating Range: Up to 10 Meters/33 Feet (Without Any Obstructing Objects) Pairing Name: KN326 Charging Time: 2 Hours Built-In Battery Type: Li-Polymer (200mAh) Package List 1 x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1 x Micro USB Power Cord 1 x RCA Wire 1 x 3.5mm Auxiliary Line 1 x Manual 1Transmitter mode: wirelessly transmit audio from a nonBluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker. 2Receiver mode: wirelessly transmit audio from Bluetooth-enabled mobile phones, tablets or computers to wired stereo, speakers or headphones. 3Simply press the switch to switch between transmitter and receiver modes and it uses advanced Bluetooth technology and 3.5 mm audio cable to easily connect with powerful wireless audio streaming function. 4Equipped with 3.5mm cable and 3.5mm to 2RCA cable, this receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smart phone, MP3 player, CD player. 5In RX receiving mode, this product supports Bluetooth handsfree calling, and When the mobile phone calls, short press the power button to answer the call.