1.MINI AIR PURIFIER : This advanced air cleaner purifier captures up the airborne particles(PM 2.5), dust, cigarette smoke, cooking odor and bad smell etc.Keep the air fresh 2.NO CHEMICAL : No chemical composition, filter elements does not need to be replaced.Effectively improving the air quality and freely breathing fresh air at home.3.WIDE APPLICATION : it can wear on your neck,hand,bag, trousers hook,Baby Carriage,Camping or just put it on your desk. Enjoy fresh air that's completely natural and healthy to breathe.4.USB RECHARGEABLE : USB interface charging,easy to use and carry. The low loss design can make it work all day. The small design can make it easy for you to take it to travel, it can high efficiency remove the peculiar smell of the hotel room, second-hand smoke, etc.5.Easy to operate, one button for on/off.Input voltage: 5VBattery capacity: 400mAhCharging time:1.5hLife time: 12hPower Supply:USBAnion concentration: 300w/cmWeight:40gColour:whiteMaterial: ABSSize:90 x 37mmPackage Contents:1 x Air Purifier1 x USB Charger1 x Lanyard1 x keychain1 x English User ManualOnly 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 allowed error is +/- 1-3cm.