【Easy-to-use APP control】: Use Tuya Smart APP Bluetooth to control bluetooth bulbs. Using group control, it is easy to control 200 bulbs at the same time, and has grouping function. Adjust light effects, manage brightness or turn bulbs on/off with just one touch.(not support wifi ) 【RGB and CCT light color】: Change color by RGB rainbow color wheel or classic CCT (2700K-6500K) color temperature. With more than 16 million colors, 6 scene modes and 1 color selection function, you can choose different lighting effects in Tuya Smart App. 【Music Rhythm and Light Sync】: Sync your favorite songs with color-changing light bulbs. With the help of the phone's microphone, the colors of the smart LED bulbs can dance to the rhythm of the song. 【Timer Function】: Set your bluetooth bulb to turn on/off at a specific time. You can set the bulb to bright until you wake up or dim until you fall asleep. 【Eye Protection Bulb】: The smart LED bulb is soft and bright to protect your eyes.