YGDA Mini Portable Air Purifier, Wearable Air Purifier Necklace USB Charging Travel-Size Smoke Purifier, Personal Air Purifier, Remove Pet Smell Cigarette Smoke Odor

Specifications: Material: ABS Power mode: USB Working principle: negative ion Negative ion ouput：3,000,000 pcs/cm3 Input voltage: 5V Working current: 0.12mA Power: about 1W Battery capacity：180 Battery can be used for about 20 hours Charging time: 3 hours Lanyard length: 50cm Product size:46*57*20mm Package Included: 1*Air Purifier 1*Lanyard 1*Charging Cable 1*Manual Features: *Constantly emit a large amount of negative ions to actively protect you against pollutants including PM2.5, pollen, dust & bacteria. *Ultra-quiet design & Ultra-low ozone emission. Fast charge & long battery life. Hassle-free maintenance. No filter replacement. *Clean air everywhere. It can be use in your car,hanged around your neck, perched on desk at work or by your bed at night. *Increase the ambient negative ion concentration, freshening the air and bringing positive effect on physical health and well-being.