AIR PURIFIER 3C - Cleans air up to 279-484 sq ft - Suitable for bedroom /children's room/ personal workplace - Ultra- quiet 31 dB(A) Enjoy clean air+ great sleep quality at the same time - Ultimate triple layered filter-360 degree barrel efficiently filtered up 99.97% pollen/ bacteria/certain virus/harmful gases and odor - Sensitive Monitoring Air Condition, High-precision laser sensors provide instant and accurate indoor air quality readings. - Smart Apps control, Supports Google Assistant and the Alexa AI smart system for easy voice control.With Mi Home/Xiaomi Home app can track and control air purifier all the time AIR PURIFIER 3H - True HEPA Class 13 filter - 22% Particles CADR performance improved & Efficiency area covers 126m2 per hour - Remotely control using Mi Home APP to build you a smart home with other Mi smart products - Works with Google Assistant for convenient voice - Touch to set the working mode and display the status of product and air quality (OLED Touch Display) - Efficient combination of Centrifugal fan + Custom Brush less Motor that improves on the output volume of clean air - Sleep, auto, favourite, low, medium, and high-level modes (6 Modes) - Display Reflected in the form of the pollution reading on the OLED screen - Square top from where the pure air is released is square shaped AIR PURIFIER PRO - Purification area up to 60 square meters - Compact design with OLED Digital Display - Ultimate triple layered filter-360 degree barrel filter - Smartphone App Control - Favourite mode, sleeping mode and automatic mode - Adjustable fan speed through favourite mode AIR PURIFIER 2C - True HEPA Filter - 360-degrees barrel filter for Xiaomi Air Purifier - The HEPA filter Class-13 removes 99.99 percent of PM2.5 particles - Filter replacement is very convenient when it needs to change it will remind automatically - The suggestion of filter replacement cycle is three to six months - There is a real-time indicator that changes colour depending on pollution levels, with just 3 variations on it (Red = Severe, Orange = Medium, Green = Low pollution level) - Favourite mode, sleeping mode, automatic mode - Compact design, do excellent purifying job - Low noise, low power consumption, more energy-saving - Cannot connect to Mi Home app, to track the pollution levels and filter capacity.