Features:
Small and portable, you can use it to purify the surrounding air in daily life.
Powerful function: release 5 million negative ion to purify air in a cubic meter.
Up to 15 hours of long-lasting battery life, USB charging, ready to charge at any time.
No radiation. Negative ions effectively neutralize TV and computer static radiation, forming a layer of negative ion protection layer reduce the harm of radiation to skin.
With perfect mute effect, no noise.Patients with heart problems cannot be used

Specifications:
Material: ABS
Color: Blue/ Silver/ Rose Gold
Size: 39*39*16.5mm
Power Supply: USB
Control Method: Button
Charging time:obout 0.5 hour
Length of use:10 hours
Package include:
1 x Air Purifier Necklace
Note:
1.Transition: 1cm=10mm=0.39inch
2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!