reuseable smart fan facemask

1. Each set of product includes 3pcs KN95 level professional protective mask +1pc air refreshing fan. 2. Masks have different colors to choose, including black, white, Khaki, dark green and yellow. 3. Enjoy free and easy breathing:The superdynamic fan rotates at 10000 RPM and exhausts air 180 times/min, providing 36L of fresh air, which is equivalent to 6 times of the air required by human normal breathing.There are 3 speed can be adjusted and free to switch.The fan could work last for 3-5 hours and only take 1 hour to charge. 4. The mask conforms to national standard GB2626, and the bacterial filtration rate is ≥95% , PM2.5 filtration rate is ≥95%,and effectively isolates 98% of UV rays. 5.The mask has an adjustable nose clip to effectively prevent leakage, and the adjustable ear buckle is suitable for comfortable wearing on any face shape.