1. Please our seller account BUYAIRCRAFT GRODUER TECHNOLOGY This is Yinken Brand Fan Product View Patent Company: Aircraft Carrier Technology! And there are no authorized distribution intermediary s! 2 .. Uniquely removable cleaning activated charcoal filter, dust, clothing and body to prevent dirt to keep the fan effectively; Large battery capacity using 10,000 mAh battery power supply, wind -independent channels, super -powerful air source. The stronger wind and airflow designed for super -quiet, high temperature occupational personnel can provide more than 24 hours of long use. Double control switch design, LED power screen, LED super bright outdoor emergency light, dozens of meters away; 15,000 RPM motors with a strong 5 -speed airflow can explode a strong air flow up to 20m/s. Super powerful wind can take body temperature in seconds. This is a multifunctional portable USB fan - waist clip fan, necklace fan, mobile power and LED flashlight. The cooling fan storage is made of robust and durable polymer plastic material for long -term outdoor use, perfect for office workers, horticulture, agriculture, walking, fishing, cycling, camp and travel and various other outdoor activities. This personal USB Belt Clip Fan, camping trips, beaches and so on. It can be used perfectly for outdoor activities such as. If there is dust, you can replace it with our powder network. There is a bright torch for the outdoor program; For power and gear, save the digital display, cord, brushless engine, double ball and save power.