Air purifier equipped with a PM2.5 sensor, with a 75W energy-saving design. - Model Name: MCK70SKS-V - Features: PM2.5 sensor - Power Consumption: 75W - Voltage: 100V - Frequency: 50/60Hz There are some stains and scratches from use, but it was used until recently and still works. The filters have been used for many years, so replacement is recommended. How about it for measures against influenza, pollen, and dryness? I will clean it as much as possible before shipping. Thank you for viewing.