aromatherapy diffuser & essential oil set - ultrasonic diffuser & top 10 essential oils - 300ml diffuser with 4 timer & 7 ambient light settings - therapeutic grade essential oils pure daily care the complete bundle - our essence diffuser has a 300 ml capacity and uses state of the art wave diffusion technology to atomize essential oils for ultimate wellness. the essence diffuser includes 7 ambient light modes with two intensity settings for 14 different light combinations. it also includes 4 timer settings and a convenient auto shutoff feature for low water levels. essence is made of bpa free plastic with a beautiful printed wood grain design.