What makes JOI so incredible is that it does not use batteries, solar or wall power to create its own light. Caframo is known for their unique wood stove Eco fans. It uses the same thermoelectric technology to transform the energy of a tea light candle into enough light to illuminate your night. Within minutes it begins to convert the heat of the candle into more than 18 times the light generated by the tea light alone. Designed to be a contemporary centerpiece with style that appeals to all. It gives you a unique and useful light source indoors and out.