Come and see our amazing products. Mask fan is 5/8 x 1 1/8 x 2 1/2 inch,It is made of ABS and electronic component.It is not an ordinary fan,its clip design can be clamped to the mask,so that it can also be used when wearing a mask.it is a charging design,so it will be more practical and durable,its wind also three levels can be adjusted,it is very light,so carry it completely no problem,especially in summer,this fan is really very useful,and its sound is very small,unike ordinary fans have a lot of noise,and with it,the air in the mask is always very fresh. Pls confirm with us about the packing info, stock color and exact production time before placing your order.