3 Stage Filtration: The Pre-Filter, True HEPA Filter and Activated Carbon Filter work together to remove 99.97% of dust, pollen, smoke, odours, allergies, mould spores, and pet dander. Filters particles as small as 0.3 microns Increased Efficiency: With its double air inlet design and a filter on each side, the LV-H13EU brings in air from both directions for better purification. Every Levoit air purifier is 100% ozone-free, never using harmful UV-C light or anion purification methods 3 Fan Speeds and Sleep Mode: With the tap of a button you can cycle between high, low, and sleep mode, depending on the needs of your environment. Once Sleep Mode is selected, the display lights will turn off completely in 5 seconds. The LV-H13EU operates with noise levels as low as 24dB, helping you enjoy fresh air as you sleep Compact Design: The Mini True HEPA Air Purifier’s small frame fits nicely on desks and shelves, taking up little space without reducing its effective range. Dimensions: 17 x 17 x 26.5 cm / 6.7 x 6.7 x 10.4 in Check Filter Indicator: Depending on use, the red indicator light will illuminate every 6-8 months, so you never forget to replace your filter. Note: Please remove the plastic bag of the filter before running the air purifier and the replacement filter is available (Search for: LV-H13EU-RF or B07Y2TB7N3). This product has a British standard plug, power supply AC 100–240V~50/60Hz