1. 800000RPM turbofan, brushless motor, powerful. 2. Strong dust removal, handling a series of debris such as accumulated dust, sand, hair, etc. 3. Built in 21700 lithium battery, with long battery life and up to 2 hours of low-frequency use. 4. Wide Usage:Air cushion blowing and suction, computer equipment cleaning, industrial dust blowing, charcoal burning to support combustion, car blowing and snow blowing, film studio and wind making, drying pets, and many other uses. Battery capacity: 10000mAh Built in two 21700 batteries Wind speed: 58m/s Working voltage: 7.4V Charging time: 3-4 hours Wind speed gear: infinite speed regulation Electric tuning: 30mAh Color: Black Material: ABS Package Contents: 1 set * Violent turbo fan (The styles and colors of accessories in different batches are random, No designation accepted.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.