More serious, however, is the following problem. After a relatively short time, the remote control stops working. But this is not defective, that problem is that after a relatively short time by removing the battery voltage (this is normal because the battery discharges) the candle no longer accepts remote control commands. By switching on and off of the candle at the bottom switch, but this is still burning for days on. In my opinion, so that's more of a design flaw. The same problem occurs when you want to use batteries. Even if they are fully charged, the voltage of the batteries is not enough (1.2V nominal voltage compared to 1.5V, a battery) of iA, so you can use the remote control. This is a significant functional impairment, especially if the candle is hard to reach areas. Therefore 2 more star deduction from me. So stay only 2 stars, for otherwise really beautiful candles.