Wake up your senses this summer with the bright and delicious-smelling scents of the Summer Fun Gift Set! These bold, energizing aromas will add the intoxicating fragrances of lemon and orange groves to your home. Includes: Red Mandarin Essential Oil, Lemon Essential Oil, and an Essential Oils Diffuser. See individual items for details. To use: Simple open the diffuser, pour water into the reservoir, add a few drops of your favorite essential oil, plug the USB port in, and turn the diffuser on. Note: The diffuser ONLY comes with a USB port.