This set of four LED tea lights from House Doctor is a wonderful alternative to classic tea lights. If you can happily do without Ru in your home, just use the LED lights instead. They are also an excellent choice for families, as they are flameless and still look realistic and feel like wax. By the way, it doesn't matter if you forget to turn them off. The tea lights have a timer function that automatically turns off after five hours. Relax with real looking warm candle flickering. Batteries are not included. One CR2032 battery is needed for each tea light.