Feature:1. Portable wireless audio transmitters and receivers are perfect wireless audio solutions for various situations and applications.2. Wirelessly transfer audio from nonBluetooth TV, home stereo system or compact disc player to Bluetooth headset or speaker.3. Wirelessly transmit audio from Bluetooth enabled phone, tablet PC or computer to wired stereo, speaker or headset.4. Switching between transmitter and receiver modes at click of button.5. Using advanced Bluetooth technology and 3.5mm audio cable (attached) to easily connect.Specification:Condition: 100% Brand NewItem Type: Bluetooth Transmitter ReceiverModel: B2Material: ABSColor: As Pictures ShownTechnology: Bluetooth 5.0, A2DP, AVRCP (Receiver)Range: Maximum Approx.10 m / 33 ft (Barrier-Free)Pairing Name: KN321Battery: Built-In ICR10370 Lithium Ion Battery.Battery Capacity: 200mAhCharging Time: 2 hWeight: Approx.77g/2.7ozPackage List: 1 x Bluetooth Transmitter Receiver 1 x 2 In 1 Cable 1 x Audio Cable 1 x USB Connecting Cable 1 x User Guide