Portable Neck-Mount Air Purifier Mini Smart LED Display Air Purifier with Stainless Steel Lanyard - Black?Intelligent LED display,easy to observe the power?Two levels of concentration can be freely adjusted?Suitable for different people and different occasions?Negative ions effectively purify the air,remove PM2.5,dust,harmful substances,viruses,bacteria,etc?Suitable for children,the elderly,pregnant women and pollen allergy,odor sensitivity?Effectively control bacteria and other infections around people to keep away from respiratory diseases?Release 200 million negative ions,a charge that can be used continuously for more than 30 hours?Purify the surrounding environment anytime and anywhere?Function: releasing 200 million negative ions,purifying haze,absorbing formaldehyde,isolating PM2.5,removing allergens,eliminating germsSpecifications:?Material: ABS,PC?Negative ion concentration: 109-200 million ions/cm3?Working voltage: DC5V?Power: 1W?Current: 50mA?Battery capacity: 700mAh?Endurance time: high concentration 30H,low concentration 60H?Charging time: 2H?Charging interface: Type-C?Product size: 8 x 3.5 x 2.3 cm?Product weight: 48gPackage included:?1 x Air Purifier?1 x Charging Cable?1 x English and Chinese Manual?Other items not included