Features: 2 types for you to choose. Provide you a safe and clean room. Can be used for bathroom, bedroom, living room, kitchen, pet, quick deodorization. Multi-function, four modes, 1 for key start, low power consumption, no filter required. The double purification of negative ion and active-oxygen can solve indoor air pollution, remove odor. Package Includes: 1x Air Ionizers 1x Manual 1x Report Specifications: Material: Plastic Product Size: Approx. 50x50x90mm/1.97x1.97x3.54in Package Size: Approx. 155x100x40mm/5.91x3.94x1.57in Air Volume: 50Cubic Meters Per Hour Control Method: for Touch Power Mode: USB Charging Voltage: AC110-240V Power Parameters: 2.5W Negative Ion Concentration: 28 Million Reactive-Oxygen Amount: 120mg/H Type: US/EU note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. When this product is in use and within 30 minutes after it is turned off, it is prohibited for human or animals to stay in room or space where this machine is located, otherwise it may cause bodily harm.