High Efficiency Particle Filtration: ToLife Air Purifier features a true HEPA air filter that captures 99.97% of particles, and the 360°outlet design refreshes the air up to 5 times an hour, effectively filtering out particles such as smoke, odors, dander, hair, and other particles, greatly improving indoor air quality and your physical and mental health. 360 Degree Air Flow: Innovative 360-degree air intake technology continuously refreshes air in rooms up to 215 square feet (20 square meters) per hour, allowing fresh air to cover every corner of the room, making it the perfect choice for home living. Low Decibel Operation: Our air purifiers come with a night mode that minimizes fan speed when sleep mode is activated, effectively eliminating any noticeable sound. The noise level of the filtered air is as low as 25 decibels, providing effective purification while creating a peaceful and relaxing indoor environment for you and your family. Customize Your Room Scent: Our ToLife air purifiers feature an aromatherapy cartridge underneath the air vents that can be filled with 3-4 drops of your favorite essential oils. As the purifier circulates fresh air, the scent will fill the room, creating a comfortable, healthy and cozy environment for you and your family. Please Change Filter: To ensure the health and safety of you and your family, our HEPA air purifier is equipped with a 2000-hour filter replacement reminder. Once the purifier has been in use for more than 2000 hours, a red indicator light will illuminate to remind you to change the filter cartridge. For optimal performance, we recommend changing the filter cartridge every 3-6 months.