MANUAL + SCHEDULEThis Submersible LED Light has MANUAL mode, you can manually adjust the brightness of red, green, blue and white; and by SCHEDULE mode, you can set the time periods for them. MUSIC + MICROPHONEIn MUSIC mode, the color of the Waterproof Bathtub Lights will change according to the music played on your phone; and in MICROPHONE mode, the color of the underwater light will change according to the sound received by the microphone of your phone. 32 lighting effectsIn SCENE mode, Pool Light can switch 29 kinds of lighting effects: red, blue, green, cyan, yellow, purple, static white; 3 color jump, 7 color jump, 3 color gradient, 7 color gradient; Degraded red, blue, green, cyan, yellow, purple, white; Red-Green Gradient, Red-Blue Gradient, Green-Blue Gradient; 7 color strobe, red, blue, green, cyan, yellow, purple, white strobe +3 manual modes 12V Testing and installation should work at 12-24V voltage. The human body safety voltage is less than 36V, so please rest assured to use this Mood Light. But the electronic transformer for 12-24V must be prepared by the customer, it is not included in the package !!! Install Underwater DirectlyThis swimming pool spotlight bulb adopts wall-mounted design, easy to install and can be used under water directly, IP68 waterproof, 304 stainless steel and rubber can resist corrosion by salted water. Specific installation method, please refer to the pictures.