1. 150000 RPM 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 4 hours of low-frequency use. 4. 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. Colour:black Material:ABS Battery capacity: 6000mAh Built in two 21700 batteries Wind speed: 52m/s Working voltage: 7.4V Charging time: 3-4 hours Wind speed gear: infinite speed regulation Electric tuning: 30mAh Package Contents: 1 * Turbo fan 1 * Data cable 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.