Mini Bluetooth Power Amplifier, Yeeco Wireless Audio Receiver with Bass Mode and 12V 5A DC Adapter, BT 3.0/4.0/4.1 Hi-Fi Digital Amp 2 Channel 50W+50W Amplifier with AUX/USB/Bluetooth Input, Blue Yeeco 50W+50W DUAL CHANNELbluetooth receiver amplifier with power supply Our Bluetooth audio transmitter is support switching Bluetooth mode; AUX IN mode; USB sound card mode after pressing BASS/M button The bluetooth connecting distance of mini bluetooth amplifier is Up to 10 meter(30 feet) wireless range in open space Dual Channel Wireless Bluetooth Stereo Audio Receiver76mm*84mm*20mm(Length*Width*Height), mini size and elegant design(aluminum body with volume knob) Mini Bluetooth 4.0 Digital Amplifier;AUX (3.5mm) Input Connector Jack and Bluetooth 4.0+EDR. Output Power(RMS):50W x 2 to speakers