The Ellia Crystallize Ultrasonic Aroma Diffuser makes it even easier to enjoy your favorite essential oils, in a new unique shaped crystal-shaped base design. Ultrasonic technology delivers a fine mist of your favorite essential oil to enhance your mood, and the soothing humidity alleviates dry air. The relaxation doesn’t stop there, as the perfectly balanced light emanates a gentle glow, all for up to 6.5 hours continuous or 13 hours intermittent runtime. With the Crystallize diffuser, you can align your chakras and then some. This diffuser has a 1-year limited warranty.