The Joi Candle Lamp uses one tea candle to give the light of 18 candles by converting the heat of the tea candle into electricity to operate 8 LED lights. Drive away the darkness during power failures with a Joi lamp. Off-grid camps and homes can benefit from a reliable light source with a Joi lamp. You can use the JOI light indoors or outdoors. It is wind proof and has overheat protection. One tea candle lasts about 4 hours and provides a beautiful ambiance for every occasion. This high quality product is Canadian made and will provide years of beautiful, functional, safe lightning for your cottage and home.