4 Pack Vacuum Cleaner HEPA Filters for Cyclonic Series RO3753EA RO3731EA RO3786EA Usage Tips:What You Will Receive:<br> The package includes 3 white ionic air purifiers for home use, designed to eliminate bad odors such as pet smells, laundry odors, rubbish odors, and more. Ideal for use at home or on the go, providing a clean and cozy living environment.<br> Convenient to Use:<br> The negative ion generator is powered by plugging in, with a one-button on/off switch and a working indicator. This ionizer air purifier is easy and convenient for daily use.<br> Good Performance:<br> After working for 2 hours, the air purifier automatically stops for 20 minutes and resumes operation. It quietly releases 20 million ions to purify the air, ensuring a healthy and safe living environment.<br> Applicable Occasions:<br> This negative ion air purifier is suitable for living rooms, bedrooms, kitchens, bathrooms, offices, hotels, shops, cafes, gyms, basements, pet rooms, children's rooms, nurseries, hallways, and more. Perfect for mothers and children, it promotes a restful sleep.<br> Compact and Portable:<br> The deodorizer air purifier measures approximately 4 x 2.5 x 11.3 cm (1.57 x 0.98 x 4.4 inches), making it easy to carry in your bag while traveling, going out, or driving, without taking up too much space.