Description: air volume control: low, medium, high-speed air flow (3 / h): 400,450,500 noise level (db): 15,33,42 power consumption (W) 70 amount of negative ions: 18 * 106ions / cm3 Power Cable length: ≥1.9m Product size: 450 * 37 * 585 (mm) Weight: 10.5KG supply conditions: 220V, 50HZ Application area: 80 square CADR: 689 1, HEPA filter: specifically for PM2.5 particles less HEPA filter pollutants, particle removal efficiency ≥99.9%, the smallest particles purify up to 0.003 microns. 2, activated carbon filter: efficient removal of formaldehyde, benzene, and its removal efficiency of 96% and 77.9%, respectively. 3, ozone disinfection technology chip technology 4, ion group: generating 18 million negative ions per second. 5, with a third gear wind, for different use of space, the largest for an area of ??80 square meters. 6, when quieter unique super mute function, so the night sleep. 7, high-voltage electrostatic filter integrated synergy 8, photocatalysts. 9, UV ultraviolet light: the Duplex UV air sterilization technology, the bacteria kill rate of 97.6% 10, air mass sensor