If you feel fatigue or want to get better sleeping, drops some essential oils in this diffuer. It will help you relieve fatigue. It can also create a peaceful ambiance for reading , working, yoga,etc. The diffuser is suitable for all people. BPA-FreeBelow 30 dB550ml Water TankUp to 20 Hours Mist TimeSuitable for 20m2 room space NOTE: PLEASE REMOVE THE ISOLATION PLASTIC SHEET IN THE BOTTOM OF THE REMOTE BEFORE USING IT. Essential Oil Diffuser Add several drops of essential oil to the water tank, the diffuser will create pleasant and peaceful ambience. You will be free of mind and happy of heart. Night Light The diffuser can also be a night light. The "LIGHT" button can performance 7 color cycle and fixed. Long press the button can also turn off the light. Timer Setting The diffuser is with 4 timer. Pressing" Timing " one time/twice/three times/four times. The diffuser will work 1H/3H/6H/ON, ON is continuous spray. It will work up to 20 hours. The spray for room space can be up to 20m2. Aroma Diffuser The aroma diffuser can relieve fatigue, relax body and mind, suitable for working/reading/sleeping/yoga. It is below 30dB without noise. Ultra quiet when working. Ultrasonic Humidifier It can also be a humidifier. With ultrasonic technology, the humidifier emits ultra quiet cool mist below 30dB. Purifying and humidifying moisture to the air when it is too dry Giftable diffuser The diffuser is suitable for all people. The material is BPA-Free. It can be a perfect gift for family, friends, kids and baby. It will bring your family a better and happy life.