【ultrasonic technology】when you travel you can also take the ultrasonic frangrance diffuser to hotel for humidification.Using ultrasonic technology,the scented oil diffuser produces a fresh and dry scent cool mist for home silent. 【Light and Mist Can Work Separately】Three work modes for fragrance oil diffuser. 1.Mist Only(the light can be turned off),2.Light Only(the mist could be turned off),3.Mist and light work together.The electric air diffuser for essential oils provide 7 LED color changing light,you can choose your favorite one as a cute night light or set 7 color automatic cycle mode as atmosphere lamp for room.The mini size will only occupy small place on your desk. 【A good Gift for Everyone 】This is a premium aromatherapy device to Creat a good smell,fragrant,pleasant,and healthy