The flame itself is developed with Green Energy LED diode. The flame moves slowly by tone the glow atmospherically up and down. We have hit both color and tone of the glow itself with incredible precision, which makes it difficult to see the difference between Sille, and degradable candles. The flame is located on a natural black wick, just as you see it on degradable candles. The stearin light is made of real candles and can withstand a maximum of 30 degrees, be careful with direct sunlight. For indoor use only. You can apply The Sirius remote control (Item 10000) to all Sille Lights. With just one click you can control the lights and apply the timer function with 2, 4, 6 or 8 hours or on/off button (must be purchased).