Description: 【Bluetooth Adapter supports AUX/RCA dual output】: connect your phone to an active speaker and connect it with an AUX audio cable, and ordinary speaker can be into a Bluetooth speaker 【Upgraded Bluetooth 5.3】: Wireless Audio Transmitter Receiver allows easy connection and pairing, stable performance and no lag, supports desktop/laptop 【Good for singing】: Bluetooth Transmitter Receiver is equipped with a 6.5mm microphone (MIC) interface, which can easily switch between various reverberation sound effects. support wireless/wired microphone singing, plug and sing 【Wireless remote operation】: Use the remote infrared remote control to control song selection/mode switching/volume adjustment, etc. It supports seven adjustable personalized EQ sound effects, 5-8 meters long distance wireless control 【Functions】: Bluetooth receiving/Bluetooth transmitting/microphone singing/infrared remote control/2.1A fast charge/U disk play/transmit, TF card play/transmit, infrared remote control Specification: Power supply method: 100~240V 50/60Hz Peripheral support: U disk playback, TF card playback, microphone (MIC) singing Output parameters: DC5V/2.1A (Max) Frequency response:10Hz-20KHz Frequency range:2400-2483.5MHz Support protocols: A2DP, AVRCP, HSP, OPP, GATT, SM, etc. Transmission distance: 20 meters (barrier free environment) Music format: MP3/WMA/SBC/WAV//A52/ /APE, etc. Supported equipment: mobile phones//computers/TVs/wired speakers/, , etc. Material:ABS Size Chart: 8.5cmx3cmx6cm/3.35inchx1.18inchx2.36inch Package Includes: 1 x audio transmitter receiver (US adapter) 1 x RCA cable 1 x AUX audio cable Note: Please allow slightly errors due to manual measurement and different monitors.