Features: The 40mm super jet fan is powerful, light and easy to carry. However, this kind of blower can produce a huge impact force, which is very suitable for all kind of strong air demand. The 1st gear is 25000rpm, the second gear is 50000rpm, and the third gear is 90000rpm, so that the work can be completed quickly and efficiently to meet all your needs. Short and medium-sized tuyeres (washing car and blowing water), small tuyere long wind tuyeres, fine brush tuyeres (filter screen dust removal) and multifunctional strong tuyeres (exercise cooling). Four type can be used to blow thread at will, which is convenient for installation. This mini jet blower is selected of metal material, with high hardness, good durability and long service life. This jet fan is equipped with USB C charging cable, and the battery capacity is 2500mAh, which can be used continuously for 4 hours after being fully charging. 20W fast charge for two hours, full of its overheating protective device and multiple cooling holes to ensure operation, with charging display. Specifications: Component:Metal Operating voltage: 11.10V Power: 240w Motor specification: 40mm Speed: 90000rpm Charging method: USB C charging interfaces, supporting 15W fast charging. Wind speed:45m/s Size:Approx.11x15.50cm/4.33x6.10inch Package Includes: 1 Set Cooling Fan note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.