【4 CUSTOMIZED REPLACEMENT FILTERS】Depending on different individuals' needs, we provide four types of filters for purchase: original filter, pet allergy filter, toxin absorber filter, mould & bacteria filter for choose. Note: One original filter is pre-installed in the machine. 【Vortexair PURIFY TECHNOLOGY】 CADR rating 187m³/h allows it to cover up to 80 m² based on 1 air change per hour, Using the Core 300 to fill your environment with clean air. Notes: AC 220-240V/50HZ with UK 3-Pin Plug. It's NOT a wireless product and CAN'T be connected via USB. 【FILTER AIRBORNE PARTICLES】Working with ultra-fine Prefilter and activated carbon filter, Our H13 HEPA filter traps allergens like dust, pollen, mould spores, pet hair, and reduces unwanted odors from pets, smoke, cooking fumes. 【PATENTED QuietKEAP TECHNOLOGY】 Thanks to QuietKEAP technology, the noise level is barely 24dB in Sleep Mode. The Core 300 cleans your air without disturbing you at night. Display light can be turned off to enjoy a perfect sleep without annoying light. 【TIMER & 4 FAN SETTINGS】 The timer can be set at 2/4/6/8 hours. You can select a desired time for auto shut-off. Choosing a suitable speed from low, medium, high and sleep mode, makes Core 300 an ideal air purifier for home, bedroom, office. 【100% OZONE FREE】Levoit air purifiers never use the UV-C Light and Anion, which could produce air pollutant-Ozone. 100% ozone free for your health. Display-Lock and Check filter indicator for your convenience. 【GENUINE REPLACEMENT FILTERS】Replace your filter every 6-8 months and use genuine Levoit replacement filters to maintain the best performance. Please search for B07RSZSYNC or Core 300-RF for replacement filters. Don't forget to remove your new filter's plastic bag before using and correctly reset your new filter. So your air purifier maintain the best performance.