These wonderful little tart warmers are great for the kitchen or bathroom. They plug direclty into the wall outlet and with the flip of a switch begin melting whatever scented wax you choose and fill your room with the aroma. The base swivels allowing the unit to fit into any plug in. Makes a great gift! We recommend that these units be used on outlets above counterspaces to prevent the chance of a child or pet running into it and spilling melted wax.