1. Breathe cleaner air: This personal air freshener will release more than 20 million negative ions, remove pollutants from your personal space, eliminate most of the smoke, cooking odors and even PM2.5 air pollutants, thereby improving mood And sleep. 2. Take it with you: Because this mini air purifier comes with a Lanyard and clip, it can be worn around the neck and on the collar. During the journey, in public places or other places with poor air quality, wearing this kind of clothing can create a fresh air area. 3. Long-lasting: The portable air purifier has a USB charging port that can be charged for 2 hour and can be used for about 24 hours to ensure fresh air 4. Silent operation, No need to replace consumables, suitable for various scenarios, purifying the surrounding environment anytime, anywhere 5. Easy to use: easy to operate, just press the simple operation to enjoy the fresh air. Product name: portable hanging neck air purifier Model: K7 Rated voltage: DC5V/1.0A Power: less than 1W Current: less than 50MA Charging method: type-c Battery capacity: 300mAh Application area: less than 10㎡ Control method: button Applicable people: especially suitable for children, the elderly, pregnant women and those who are allergic to pollen and peculiar smell colour: black Material: ABS Size: 80x23x35mm Package Contents: 1 x Air purifier 1 x lanyard 1 x charging cable Only the above package content, other products are not included. Note: Light reflection 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.