Portable Wearable Neck Air Purifier Formaldehyde PM2.5 USB Air Fresher Cleaner

concentration: 3 million/cm3 1 x to hang on the rope Come with a hanging rope can be hung on neck it is convenient to be used in daily life on the public transport and tourist spots USB charging long service life it can last for about 5 hours with sufficient power and recharge in just 20 minutes It makes these suspended attract each other then become larger and heavier finally landing Lightweight small in size easy to carry it make you breath fresh air when you go out 1 x Wearable neck air purifier (PC) Weight of square one: 25 g The product is and has quality 4 Types: White square air purifier Gray square air purifier -shaped air purifier bear-shaped air purifier Life time: 13 hours Size of square one: 50 * 50 * 17 mm This air fresher releases a large amount of oxygen anions that can effectively pet hair floating second-hand and other harmful substances in the air Charging method: USB charging It is very quiet during operation without disturbing you when you work or rest giving you a quiet environment It not harmful molds and but also decomposes fumes odors and harmful gases such and released by car interior parts Item name: Portable wearable neck air purifier 1 x USB (PC) 1 x receive package