Hanging Neck Negative Ion Air Purifier Portable Household Formaldehyde Removal Portable Purifier(Black)

1. Operating voltage: DC3.7-DC5V/1.5A
2. Power: <1W
3. Current: maximum 15-20mA
4. Noise: about 20 dB ultra-quiet
5. Battery capacity: 380mA
6. Charging interface: micro USB charging
7. Charging time: 30 minutes
8. Material: environmental protection ABS+PC
9. Negative ion concentration: 20 million/cubic centimeter
10. Life time: 15 hours -20 hours
11. Product weight: 40g
12. Passed CE ROHS FCC certification
13. Function: Purify formaldehyde, effectively block viruses, strongly purify smoke, remove PM2.5, remove allergens
14. The negative ions released by the negative ion purifier can condense small particles of 0.04-3 microns suspended in the air into larger particles, and forcefully repel the wearer's breathing area
15. Hanging neck design, follow 24 hours a day, meet daily use
16. Safe and no radiation, no fan and noise