1. High-speed brushless motor: It uses a brushless motor with a diameter of 29mm, with a speed of up to 130000RPM, and the blades are CNC metal, with strong wind and durable. 2. The turbo fan has two built-in 21700 large-capacity batteries for long-lasting battery life. And it adopts the TYPE-C universal interface design and supports 18W fast charging. No need to worry about battery life. 3. The wind speed is adjustable: supports infinite speed regulation. 4. Wide application: This mini turbojet fan is not only very versatile, but also has a wide range of uses, including cleaning outdoor equipment, cars, keyboards, cameras, and even cleaning pet hair! Name: Turbo Fan Battery: Built-in 4000mAh, 21700 type Voltage: 6-8.4V Brushless motor: Maximum speed: 130,000rpm Maximum wind speed: 45m/s Maximum motor power: 180W Charging time: Greater than 2.5h Colour:Black Material:PETG carbon fiber + metal Package Contents: 1 x Jet Fan 1 x charging 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.