[ High Concentration Negative Ion ]2million/cm3 at a distance of 15 cm. Effectively absorb formaldehyde, solve the surrounding air quality problems, eliminate second-hand smoke and purify the surrounding air. Removes most of pollen, odors, smoke, cooking odors, and even PM 2.5 air pollutants. Keep you in the purifying range at any time and breathe safely. 

 [USB Rechargeable Air Purifier]Just plug it into the charging port to charge. It will be fully charged in 2 hours and can be used continuously for 48 hours, so it can provide you with fresh air for a long time. This portable ionic air freshener is perfect for people who are sensitive to breathing. 

 [ No Noise Design ]Low noise during the purification process, will not disturb you during work or rest. No radiation will be generated during the purification process, so pregnant women, children and the elderly can be rest asured to use it. During the journey, in public places or other places with poor air quality, you can wear a necklace air freshener to create a clean air freshening area. 

 [ Mini and Easy to Carry ]Mini portable necklace design, fashionable and easy to carry. You won't feel tired even if you wear a necklace for a long time. It is very suitable for travel, this is not only a fashionable necklace, but also an effective purifier. Easy to operate, just press the button for two seconds to enjoy the fresh air. 

 [ Great Choice for Gifts ]Say goodbye to ordinary big size air purifier! Let you enter the purification range at any time and breathe safely, it will be a most intimate gift for your leaders, friends and family! 

 Product Name:Portable Air Purifier 

 Working Principle:Negative ions 

 Applicable Area:1 Cubic Meter 

 Functions:Air purification 

 Density:2million/cm³ 

 Noise: below 25dB 

 Voltage: DC5V 

 Power: 0.1 w 

 Charging time: About 2 hour 

 Battery life: more than the 48 hours 

 Weight:30g 

 colour:White+black 

 Material:ABS 

   size:55 x 17 x 60mm 

 Package Contents: 

 2 x Air Purifier(1pcs for each colour) 

 2 x USB Charger 

 2 x Lanyard 

   2 x User Manual 

 Only 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.