Features: -This diffuser adopts ultrasonic technology that provides whisper smooth mist and pleasant aromas to create calm, relaxing environment, soften and moisten dry and chaped skin and helps you breathe better in winter. - Made of safe, health friendly and fireproof ABS and PP materials, this aroma humidifier has got CE certifications to ensure you premium quality and good health. It will envelop your surroundings effectively and brings a SPA like feeling to your home and relax yourself from a long day working. Note: Don't add too much essential oil. Add appropriate amount water, maximum water amount is 130ml. Don't make the humidifier lost balance, or the water will spill over. Maintenance instruction: Regularly clean cotton swabs and Change cotton swabs, you must add the spring wire with the cotton swabs, because there will no mist come out if without the spring wire. please clean the atomizer plate with medical alcohol regularly.