Product Description Package Contents: 1 x Air Purifier 1 x True HEPA Combination Filter (Pre-Installed) 1 x User Manual Safety Warning Please remove the plastic bag of the filter before running the air purifier. Intelligent Air Quality Sensor Let your purifier do the thinking! On Auto Mode, the air purifier has an advanced sensor that can detect the air quality in real-time and then feedback the results in four colors, based on the result you don’t have to lift a finger and the purifier will automatically adjust and select the appropriate mode Air Purifier for Large Bedroom : Clean Air Delivery Rate(CADR) is 400m³/h, which means that in a room of 83 ㎡, it only takes 30 minutes to purify the air once. The LV-H133 can complete the delivery of purified air quickly and effectively. Suitable for medium and large room, baby bedroom, whole family room and kitchen Professional Air Care : H13 HEPA filter can remove 99.97% of 0.3-micron airborne particles such as dust, smoke, and allergens such as pollen, and pet dander. The air purifier can automatically indicator to change the filter replacement, for more information about filters, search ASIN: B07DVWWC44 Quiet Operate Environment : The air purifiers run at a discreet 25dB, which is as quiet as a whisper. You can turn off the LED display screen to create a more comfortable environment for you. You can set a time between1-12 hours according to your preferences so that there is fresh air in your room at any time Timer Function & 3 Speed Settings : Other than 3 timer options of other air purifiers, the 1-12 hour timer range gives you the flexibility to choose exactly how long you want the purifier to operate at any given time and save energy in the process. Match your spaces every need - choose from low, medium, or high speeds to purify air on a daily basis.