Three wind speeds can be adjusted at will: blowing water, blowing air, blowing dust, and supporting combustion. You can control the wind power Super long battery life. The first gear can be used for up to 3 hours. Built-in two 21700 lithium batteries with a battery capacity of 7.4V-4000mAh, which can last longer 52m/s Super Strong Wind Brushless high-speed motor with a rotation speed of up to 130,000 rpm, which can generate a strong wind speed of up to 52m/s. Three-speed speed adjustment gives you a different experience Powerful magnetic air nozzle click! It closes as soon as it is applied. Strong magnetic force, stable adsorption and will not fall off Multi-scenario use, pet drying, barbecue combustion, manual dust blowing, keyboard dust removal, camera dust blowing Name: Violent Turbo Fan Working voltage: 6-8.4V Battery capacity: 4000mAH Charging time: 2.5h Battery life: 3h Colour:Black Material:ABS Package Contents: 1 x Violent Turbo Fan 1 x Air Nozzle 1 x Charging Cable 1 x Chinese and English instruction manual