Seem like a good price for a 500ml diffuser
[Advanced Oil Flow System]:12 Hours of Consistent Scent & Aromatherapy with OneFill technology. With one single fill (around 1.5ml / 30-40 drops), the scent will last 11-15 hours in low mode and 6-10 hours in high mode.
[Beautifully Quiet]: Designed on the basis of the principle of hydrokinetics to operate below 30dB which will not affect your sleep or your work.
[Waterless Auto Shut-off Function]: Automatically shuts off in 5 seconds after running out of water as a safety feature. You have the option to set the timer (1Hr/4Hrs/8Hrs), and the diffuser will turn off accordingly.
[Miracle Soothing Mist]: The ultrasonic technology delivers fine and stable cool mist which increases the air humidity without dampening your furniture or your floor. According to your room size, you can adjust the mist level between low and high modes by pressing the power button.
[Stylish Design]: With its minimalist design and modern optics, the aromatherapy diffuser makes a great and valuable gift for your friends and family. (Collapsible refilling cup included)