Wearable Air Purifier Negative Ion Generator for Adult Kids Black

characterized in that the air cleaner can generate negative ions. Anion 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: stylish design make your surroundings more colorful, more fun. Perfect gift idea for family and friends.Main function: Mini,portable necklace design, stylish and convenientEasy to operate, one button for on/off.Rechargable lithium battery.Product Specification:Power Supply: USBInput voltage:3.7V (Battery), 5V (USB Power)Working principle: anionsApplicable area: below 10mFunctions: air fresherFilter type: noAnion density: 1mNoise: below 25dBWorking time: more than 20hColour: BlackMaterial: ABSSize: 5.5 x 6.5 x 2.1cmPackage Contents:1 x purifier1 x usb line1 x chain1 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.