This Bluetooth speaker is with three color of strobe effects which can produce wonderful colors and bright light. It can be widely apply to bars disco ballroom KTV and so on. Features 1. High fidelity stereo Bluetooth speaker. 2. Colorful magic atmosphere lighting especially beautiful in dark. 3. With remote Bluetooth controller. 4. With line in. How to use Bluetooth when this light is open you can hear "beep-beep turn on the Bluetooth device of mobile phone to enter Bluetooth searching state and select the matching after finding "AOSL" then you can hear "beep it means that the pairing is complete. please exit the Bluetooth pair before you true off. some Bluetooth device need to enter pin code. Default code is 0000 or 1234.