This 5.5" tall tart warmer can be used to warm scented tarts to fill a room with your favorite fragrance. To enjoy scented oils, simply add a few drops to the warmers dish. On/off switch built into power cord. Light bulb included. UL Approved for safety. Our tart warmers use 24 watts of power. Tart bowl measures 3 3/4" x 3 3/4" x 3/4" deep.