RGB LED bulbs are extremely energy efficient light bulbs that are also ideal for bar, KTV, stage, and all clubs, casinos, restaurants, cafes, birthday parties, wedding banquets, holiday lights, indoor and outdoor decoration. With four modes and color storage.The light bulb will help you remember the color of the lamp when you turned off the light last time. The bulb has four modes to choose from: static, flash, strobe and fade(the smooth mode is the same as the fade).