We offer discount for large quantity. Welcome to contact with us! characterized in that the air cleaner can generate negative ions. be used to enhance the body's metabolism and homeostasis.Maximum efficiency: our personal portable air purifiers can release as many as 20 million negative ions, thereby reducing energy consumption and energy efficiency.Mini Portable: You can wear it around the neck, lightweight and portable, can be used anywhere without noisy. The product does not need to add any water or liquid, beginning purify the air.Gift of Love: Cartoon design make your surroundings more colorful, more fun. Perfect gift idea for kids and friends.Name: Wearable Air PurifierCharging Voltage: DC 5VWorking Concentration: greater than equal 20 million /cm3Battery capacity: 600mAhCharging time: 2-3HUse time: 48HWeight: 54gWorking Principle:The air purifier releases negative ions and attaches them to the air around you and to the unclean particles in the air, making them negatively charged. The negatively charged examples repel each other, fly away from your breathing space, and are attracted by the nearby positively charged surface, forming large particles, which sink to the bottom by gravity, so as to avoid entering your breathing system.size:87.5x52.7x21.4mmMaterial:ABScolour:Pink/WhitePackage Contents:1 x purifier1 x USB cable1 x lanyard1 x Chinese and English 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