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The Windmill Spa is an ultrasonic essential oil diffuser built around a rain-sound effect: water droplets cascade inside the unit and you can adjust the rain intensity. It holds a 300ml BPA-free PP tank, runs on tap water, and adds a 7-color LED night light plus auto shut-off when the water runs dry. It suits people who want ambient sound and aroma together in a bedroom, bathroom or yoga space. Against plain diffusers it trades a larger feature set for more moving parts and a bigger footprint; owners rate it highly for the rain effect and lighting.
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Owners rate it 4.7 out of 5 across 163 ratings, with the rain sound and colored lighting the most mentioned highlights. Complaints center on upkeep and the rain feature's noise level.
The Windmill Spa Ultrasonic Humidifying Essential Oil Diffuser mists water and essential or fragrance oils into the air. It adds a rain sound effect, and the intensity can be adjusted by changing the rain size. Droplets fall inside the unit, imitating the rhythm of rainfall.
It has a 300ml BPA-free PP water tank and a 7-color LED night light. The diffuser shuts off automatically when the water runs out. It also humidifies the air, which reduces dryness and eases skin and throat discomfort. A wireless remote is included.
To use it, fill the tank with tap water to the max line and add 3-5 drops of essential or fragrance oil. Then use the remote to adjust the rain size, LED color and mist output. It can be placed in a bedroom, bathroom or yoga studio.
