13 Predefined Colors to Choose from: This lamp is made up of multi-colored LEDs with progressive on and off effects for 13 predefined colors. A variety of colors to restore the natural color of the aquarium. Auto On/Off: Includes 4, 8 or 12 hour day and night cycle, and there is also a convenient remote control to control the lamp. The lights will automatically turn on on time each day based on your settings. Adjustable Brightness: Gradually imitates the effect of sunrise and sunset, 5 levels of adjustable brightness. 3 Layers of Protection: Thanks to the double rubber cover and the waterproof glass, collisions and water infiltration can be avoided. Multiple Installation: The lamp can be placed firmly anywhere inside or outside your aquarium with the strong suction cups.