Super long battery life. The 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 Powerful magnetic air nozzle click! It closes as soon as it is applied. Strong magnetic force, stable adsorption and not fall off 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 Three wind speeds can be adjusted at : blowing water, blowing air, blowing dust, and supporting combustion. You can control the wind power Multi-scenario use, pet drying, barbecue combustion, manual dust blowing, keyboard dust removal, camera dust blowing