PM2.5 Negativeable Necklace Air F Ion Wearable Air Purifier

Features
1.Three-level smart switch button. Three levels of
  air intake are customized according to the three
  lung capacities of sitting,walking,and running to
  ensure that every breath you take is safe and com-
  fortable.
2.With valve,the valve is closed when inhaling to
  prevent polluted air from entering;the breathing
  valve is opened when exhaling to discharge exhaust
  gas
3.USB charging, charging for 4 hours,battery life
  6-8 hours.
4.High efficiency filter,anti-bacterial + activated
  carbon layer + HEPA
5.Uses: anti-smog, anti-PM2.5 particles, anti-dust
  anti-pollen,anti smoke,anti-formald-
  ehyde,etc.
6.Waterproof design,even if it rains.
7.100% brand new and high quality; High-quality ma-
  terials,safe and environmentally friendly, durable
  Humanized design
8.Can be used for 5 ~ 7 days; Five-layer filtration
  system to efficiently filter haze, dust and small
  particles;
9.Three-dimensional fit,comfortable without odor
  bring you a comfortable wearing experience.

Description:
Use: Head-mounted Control method: manual control
Applicable age: children Whether to charge: No
Characteristics: Not easy to deform Function:
clean air, smooth breathing
Application scenario: public places note: Due to
the display and manual measurement, the color and
size of the product may be slightly different
please understand.

Air Purifier *1pcs*1pcs
Product Manual *1pcs