Small Mask Fan Non-stuffy Heatstroke Prevention USB Mask Fans Rechargeable Smallfeature:Easy to use: You can easily clip it on the mask, let the air circulate in the mask, provide fresh air, and reduce the discomfort that may cause stuffiness and breathing at the same temperature as the inside or outside. Provide wind power for traditional mask fansAdopt high-quality material: The host is made of ABS material that is exposed to antibiotics outdoors, and there is no problem in long-term wear.Small and light appearance: easy and convenient, not easy to stand out, no need to worry about the surrounding environment when usingIt is USB rechargeable and can be used anywhere, and it can be recharged via a mobile phone battery. The battery capacity is 300mAh and can be used continuously for 3.5 hours.Simple operation: easily clip onto the mask to ventilate your mask in exchange for fresh air.specification:material: plasticColor: as shownThe package includes:1x mask fan