Mini Air Purifier Wearable Necklace Usb Negative Ion Generator Black

Features:Using pulsed tip technology to release a large amount of oxygen anions, using the latest dual carbon brush and double negative ion generator design, over 6 million negative ions can effectively remove floating dust, smoke, formaldehyde, PM2.5 and other harmful substances in the air.Wearable Design: Portable necklace design, or hanging it on your pocket or bag, stylish and convenient to carry. you can wear it all day without feeling tired. Won't disturb you even while you are working or taking a rest with quiet fan and motor.Applicable area: This air purifier radiates a 3.3 feet Track of safer air in any direction, creating a sphere of protection. Bring you a nearly natural state environment even in some public places.Speciafication:Power Supply: USBWorking principle: anionsApplicable area: below 10mAnion density: Greater than 3millions pcs/cmNoise: below 25dBInput voltage: 5VInput power: 0.1WSize: 5.5 * 6 * 2cmColor: blackmaterial: plasticPackage Contents:2 * Air Purifier2 * Usb Charging Cable2 * Chain2 * 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.