Dimmable and Color-Changing Light Bulbs (5) with Remote Control Used for about 3-4 months. There might be a slight flickering when dimmed, but they work without any problems. Both the products and the case are in good condition. Price negotiations are welcome. Thank you. No electrical work or replacement of lighting fixtures is required; you can upgrade to a high-function remote control type lighting system simply by changing the light bulbs. One remote control can control up to 4 channels, allowing you to operate the light bulbs throughout your house. Because it uses a wireless remote control, it is resistant to obstacles, and you can operate it from different rooms. You can use it with lighting fixtures that have shades, etc. Of course, you can turn it ON/OFF with the remote control, and you can finely adjust the brightness from 3% to 100%, from warm white to daylight. By setting the perfect color and brightness for each moment of your daily life, you can achieve a more comfortable life with these high-function LED light bulbs.