These understated devices double as both a humidifier and an oil diffuser. They have colour changing LED lights and come with a USB cable for powering. Add drops of essential oil in the water tank to release the scent with the water vapour. Humidifiers are reported to have several health benefits including reducing snoring, dry coughs, asthma symptoms and allergies.Packaged Dimensions: H12cm x W10cm x D10cm"