iBELL 2.1 Channel Multimedia Speaker, Powerful 20Watts RMS, Super Bass Output, Fully Remote Control Operation | Bluetooth Connectivity|SD Card|USB|AUX|FM Radio, Easy to connect with Laptop, Computer, TV and DVD Players | Output: Subwoofer:10Watts 4 Inch | Speaker:5Watts*2 no 2.75 Inch | Dimensions: Subwoofer Height:23cm,Length:15cm,Width:26cm|Speaker Height:13.5cm,Length:9cm,Width:8cm|Inside Package:Subwoofer Speaker|Satellite Speaker|Audio Cable|User Manual|Remote Control|FM Antina | How to Use the Bluetooth Function: Select the Audio Input>Search BT device with name ‘’IBELL’’>Connect the BT [If your BT device 2.0 Version, input password ‘’0000’’ when connecting. What mean of the Knob Lamp Color: Standby:The RED light slow flash|AUX Function:Normally ON the RED Light|USB:The RED Light Flash when reading Card|BLUETOOTH:Blue|FM|Light Changed to Purple in FM Mode