This negative ion air purifier with the highest efficiency - up to 35 million negative ions s/s, filter-free mobile ionizer and travel purifier clean: pollutants, allergens, mold, odors, etc. Effective Purification: Ten million negative ions can effectively clean the indoor polluted air and harmful substances such as secondhand smoke etc. No need to change filters: never worry whether your air purification filter is almost exhausted or the problem of purchasing and replacing expensive air filters. Filterless ion-box technology purifies the air without expensive maintenance or cleaning, making it easy to breathe. Quiet operation: no noisy fans or motors, no electronic radiation. You can enjoy the fresh air and fall asleep safely. Portable and Easy to Use: This plug-in air purifier will start working automatically once you plug it in. It's the perfect gift for family, friends and office colleagues. Plug type: US plug, applies to Canada, India, Mexico, Thailand, United States, Philippines, Taiwan and so on. Size: 50x40x100mm Material: ABS Color: Pink/Blue Package Contents: 1 x Air Purifier Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.