Strobe effecta:it is a great way to liven up any party, these dj crystal rgb full-color led rotating bulbs deliver 6 colors which change and rotate automatically to create a strobe effect similar to a disco ball. decorative light:perfect for use at homes, night clubs, bars and reception halls, these bulbs will turn any setting into a spectacular light display. use them for holidays, weddings, birthdays, dance parties, disco, and other festivities. stable and safety product:we use isolation drive, perfect drive design, can use to 100 to 240 voltage, the drive have protection function of electric leakage, to avoid product explosion or short out during running. harmless products:unlike fluorescent bulbs, these led lights do not contain mercury and wont release any hazardous gases. family party lights: entertainment colorful rotating lamp, featuring a standard e27 base to fit most light fixtures, automatically rotating while power on, and 6 colors disco light rotating together.