These LED lights light up according to the settings, giving the effect of a real burning flame. They are great for decorative purposes. Just installs the bulb into the lamp holder and enjoy the real effect of flame.4 Modes. Flickering light bulbs has flame emulation mode, breathing mode, general light mode and gravity induced mode(upside down). Turn off the light then back on and it changes to the next mode. The light output is warm and bright with a perfect flame effect. It's like they are really kerosene lanterns. The bulbs do not get hot as regular bulbs.Led flame effect light bulb fit all standard E26 screw bases. You just need to screw it to the lamp holder and turn on the switch, and the bulb will light up. The power is 3W, so the energy efficiency is excellent.The perfect substitute for candles and kerosene lanterns. The bulbs can be used on fireplaces, front patio lights, lanterns, chandeliers, street lights, wall sconces, etc. They are great for decorative purposes. Christmas, Valentine's Day, events, holidays, setting a romantic or calming tone, they have a nice effect for these things.