The LED RGBW bulb is a remote control bulb that combines daily lighting and color changing. It has bright cold white (2700K) lighting wram white CRI>85, 800 lumen, equivalent to 70-Watt Incandescent bulbs. There are also 12 colors and brightness adjustments. It is very easy to use and is suitable for many purposes. In addition, it comes with 2-year-warranty, 90-day-refund guarantee ensuring high quality standards applied and friendly customer service provided. The bulbs are available in 12 colors and offer a variety of lighting effects to reflect different emotions. 3 kinds of brightness can be adjusted, 100% brightness is used for daily illumination, 30% brightness is used for nighttime auxiliary illumination, and 1% brightness is used for sleep mode, to meet different environmental requirements. There is also a one-button night light function can directly provide the darkest lights to meet sleep needs. Flash Mode & Smooth Mode: Two lighting modes allow you to set up the appropriate atmosphere anytime to bring you a better visual experience. Flash mode gives you a stage effect when enjoy concert or stage performances, just let the light and atmosphere to match to create an immersive feeling. Smooth mode provides automatically cycle switching on light colour in different atmosphere. It also adjusts the rhythm and creates more surprises and romance. Memory & Synchronization: This light bulb can memory the last color or mode we used. Synchronization is a revolutionary innovation for environments where multiple light bulbs are used together, such as fan lights, bar lamps, chandeliers, table lamps, and more. When we use flash and smooth modes, the rhythm of the color changing of the bulb can always be consistent. Note: One remote control can control all bulbs. Timing function: The light bulb can be set to automatically turn off the light after a few hours. Cycle timing of (24 hours) is another surprising timing option. We can install the light in the courtyard, the court and the corridor, and set the cycle time (24 hours). Then the light would turn on and off automatically every day, which changes our lives and makes life more convenient.