Review: SPASENS® Aromatherapy Oil Diffuser/Humidifier

**UPDATE!!  I have had to update my review. I CAN NOT recommend this product,after a weeks use, it has broken and leaks water all over. I am unsure if the water leaking inside the machine renders it unsafe. So,I will no longer be using this item and CAN NOT recommend to others. 
 DESCRIPTION: Aromatherapy Oil Diffuser/Humidifier + FREE Essential Oil -SPASENS®-Bigger Water Tank Capacity 2000ml (2L), 12 Hours Diffusing, Silent Ultrasound Humidifier - Multicolor Displays,Beautiful Carved Design, Very Strong Cooling Mist, 2 Mist Nozzles,Rotatable 360 Degree Rotatable Double HeadsDiffusing - Premium Quality >  Link on Amazon

About the Product

• ✔ DOUBLE MIST: Dual nozzles which means it helps spread the moisture and the essential oils faster, by shooting the mist up through two different pathways. Combines functionality with beauty!
• ✔ ESSENTIAL OIL BENEFITS: Smaller and lighter particles! SpaSens® ultrasound diffusers break down essential oils into smaller particles compared to heat methods! Deeper travel into your sinuses and easier to inhale leading to faster recovery!
• ✔ LARGER SIZE: Increased water tank 2L for longer lasting diffusing! Significantly increases the quality of air wherever you use SpaSens® Diffuser/Humidifier improving overall quality of air you breathe. ALSO, works in complete silence without disturbing you!
• ✔ BE IN CONTROL! The SPASENS® Carved Design Diffuser can also display 7 different colors alternating automatically! Lastly, you can turn the lights off completely, for when you want to use the diffuser for better sleep during the night.
• ✔ ADJUSTABLE: 3 Adjustable Mist Levels (Low, Medium, High), as well as a waterless auto shut off.

My Review:

First off, I received this product at a discounted price in exchange for my honest review. 

The pros:                                                                                                                                                  I love the large size. It holds 2 liters of water and it lasts all day or night long (approx 12hrs for me). All of the features work just as described in product description.

 The output is enough to benefit my whole downstairs which is exactly why

 I wanted this diffuser.

 The cons:                                                                                              The free oil that came with the diffuser smelled awful. It was supposed to be lavender but it smelled nothing it and the consistency of the oil seemed off.

The cap that "screws on" to the diffuser's water tank, DOES NOT screw on securely.

 That causes the cap to come off during use and results in water leaking

 inside the unit itself. I am unsure if that is safe and I will not continue

 to use it for that reason.