280ml essential oil diffuser 3d glass aromatherapy ultrasonic humidifier - auto shut-off,timer setting, bpa free for home hotel yoga leisure spa gift porseme specifications:<br>main material:bpa free, plastic base, gold plated glass cover led color:7 full-color led lights with 14 gradient colors<br>input voltage:ac 100v-240v cable&water capacity: 100ml, waterless auto-off secure operating time: spray 4 hours<br>user instructions:insert the adaptor's connector into the dc jack input at the back of the base of the diffuser.remove the diffuser's outer glass cover and inner plastic cover.pour mineral water (bottled or tap water) into the water tank.add a few drops of essential oils (3-5 drops) or fragrances (3-5 drops) to the water.replace the inner plastic cover and the outer glass cover on the diffuser.plug the adaptor into the outlet.about light mode:select the gradual light mode: when you turn on the diffuser,the light is default gradual. then,press the "light" button, you can choose the fixed lights(seven colors optional).finally, close. the light mode changes and cycles in turn:gradual light - fixed light - close - gradual light .press the "light" button (2-3s) to turn off the light mode.about atomization mode:select timer mode: when you turn on the diffuser, the timer is default auto, diffuser work until the water tank is empty. then,press the "mist" button to set the timer.press the "mist" button (2-3s) to turn off the atomization mode.packing list:<br>1 x aroma diffuser1 x power adapter1 x user manual