Necklace Air Purifier Wearable Personal Negative Anion Air Purifier

Features:
Miniature, necklace type, simple to wear and take off.
USB cable charge, built-in high quality large capacity polymer lithium cell.
Short charge time can storage more energy, lengthen service time.
Anion purifiering, keep breathable air in clear.
Intelligent display, gears transform, one-button switch.
High and low gears adjustment.
ABS + PC material, eco-friendly, heat and cold resistant, high hardness.
Low noise operation, creat fresh, comfortable and health environment to live.
Stainless steel chaining, anti-rust, anti-fading.