1. This product belongs to the combination of four-color water mark lamp and green laser. 2. The water mark has four colors: red, white, blue and green. The laser color is green. The remote control can adjust the water mark color, water mark speed, water mark mode, bluetooth mode, water mark single control, laser single control, brightness, music control, sound control, selection mode, timing function, switch, any mobile phone or other device to turn on bluetooth. All can be connected without checking.