Built in 21700 lithium battery, with long battery life and up to 2 hours of low-frequency use. Strong dust removal, handling a series of debris such as accumulated dust, sand, hair, etc. 300000 RPM turbofan, brushless motor, powerful. Infinite speed regulation, easy to operate with one hand, two in one switch speed regulation, increasing air volume from small to large, better protecting the motor., Weight: 1.38009376012 Pounds, Manufacturer: susaa