Personal Wearable Air Fan USB Portable Breathable Health Protection Clip Fan Feature: With Good Quality. Small, light and compact. Portable ; Mini design, convenient ; easy operate in anywhere. Hot Summer day,Comfort your face. Easy to wear with clips.Circulating the air in the mask. Super light and without sense of wearing. Necessities with newlife style. The air circulation fan with built-in lithium battery can be charged by USB cable, which is energy-saving and environmental friendly Electric Air Fan, with unique built-in fan ventilation design, excellent permeability, with two-level adjustable, and produce air with high effective and actively deliver fresh air. keep the air flowing and fresh. It is easy to wear with clips.Circulating the air in the mask.Super light and without sense of wearing. Necessitles with new life style.The new mask fan speeds up air circulation and breathes fresh air. The air volume is as high as 41 liters/min. Say goodbye to the sultry heat of the mask. 2 wind speeds can be switched freely to meet different needs, USB charging and portable Warning: 1.Can not be installed in some types of mask 2.Can be worn in anywhere of left or right side color: White Size: 75.5*35*20mm Delivery Quantity: 1 Piece