There are two parts to the Lumos Candle – a base that contains the battery and other electronics, along with replaceable/interchangeable refills that are placed upon that base. Each refill in turn consists of a clear jar containing a wooden wick surrounded by essential-oil-scented natural soy wax.
When users want to light the candle, they just press a button on the base. This produces an electrical discharge which travels up the wick (via a proprietary process), setting the top of it alight. From there, the Lumos just burns like a regular candle until it's blown out.
One USB-charge of the base's battery should reportedly be good for over four months of use, based on four candle-lightings per day.
If you're interested, the Lumos Candle is currently the subject of an Indiegogo campaign. A pledge of US$58 will get you one with two refills (in a choice of six scents), when and if they reach production. The planned retail price is $98 – there's no word on the cost of refills.