Introduction:Excelvan aroma diffuser uses ultrasonic transducer， vibrating at a frequency of 2.4 million times per second.It can make the molecule of water and essential oils so tiny that it is easily absorbed by our body.Ultrasonic vapor diffusing keeps the original effect of essential oils instead of the traditional heating ways. Excelvan aroma diffuser's environmental friendly materials and brief design can make eternal perfect.It can create an aromatic， relax and fresh living environment， make users free from the outward shackle， back to original nature， more close to our inner joy， and start the fantastic aromatherapy journey. Features:Seven Kinds of Colorful Changing LED Light， each color has High and Low types. Beautiful and Romantic Colors.Large 300ml water capacity that can continue use up to 6-8 hours each time.LED Light Diffuser relieves depression， stress， fatigue & headaches. Eases breathing & sleep better.Moisturizes and refreshes the quality of air we breathe.Split water molecules into a diameter of 0.3 NM Cold Fog.Different from traditional way of heating， combustion type hot fog， the Cold Fog Technology does not harm the essential oil of any ingredients， no secondary pollution and Safer. Specification:Material: Upper parts-PP， lower base-ABSMost advanced ultrasonice technology:2.4MHZLED light: 7 Color Changing lamps Mist output: 50-70ml/HTiming Set: You can set 60/180/360 minutes to let the device to turn off automatically or just choose "on" for turning off manuallyCapacity: 300MLHumidification: around 50-70 ml/H Power supply: Input/Output AC 100-240V 50-60HZ/DC:24V 600MAProduct size: Approx ��4.3*6.1(H)InchesPackage: Common packageKeep essential oil 100% natural without burning or heating and automatic shut off safely Package includes:1 x Excelvan 300ml Aroma Diffuser Humidifier1 x AC Adaptor1 x Measuring Cup1 x User ManualApplication: Beauty salon， SPA， Yoga， Bedroom， Living room， Conference room， Office， Reception center， Corridor， Pet room， Toilet， baby room， Hotel， Hospital or any other private / public circumstance Before press the " MIST" button， please ensure that you have added water into sink. That is to say， if there is no water but press the "MIST"button， the diffuser will be burned out. Therefore， please pay attention to that.Please make sure the essential oil is water soluble and liquable.Please clean the unit regularly.Note:*The button "Mist" should be pressed down and HOLD about 3 seconds， then it will produce cool mist instantly. Oil is NOT included in this package.