ABOUT: Innovative & stylish the Aroma-Elm cool-mist ultrasonic diffuser features a large 300ml water capacity. The ultrasonic technology creates healthy anions to improve the air quality for improved wellbeing. The night light has a gentle warm light breathing light, or has a colour changing light, which cycles through a series of relaxing colours, which can be set to you favorite colour, or completely switched off the light if preferred! FEATURES: 5 in 1 multi-functions Large 300ml Water Capacity Operates up to 10 hours high mist mode Operates up to 18 hours low mist mode Additional timer feature allows you an option to set to shorter operating times of 4, 6 or 8 hours Uses Ultrasonic Cool Mist technology, no heat source Auto switch off on low water level Can operate with no light if preferred, or cycle through colours, or set to one colour SPECIFICATIONS: Product size 148 x 136 mm Mist dispersion covers 30-35 sq/m Operates 2.4 million Htz/se