1. Brushless Motor: The turbo fan adopts brushless DC high speed motor, and supports 3 gears regulation, with 1 gear (40000RPM), 2 gear (80000RPM), and 3 gear (130000RPM) to meet different needs. 2. Power Supply: The working time in 1 gear is up to 4 hours, with 2pcs built in polymer batteries and a single capacity of 3000mAh, equipped with a Type C charging interface and supports 13W fast charging. 3. Simple Operation: The electric air blower has a compact structure and light weight, making it easy to use and carry. Simply press the switch to start the airflow, and release the button to stop the airflow. 4. Good : The turbo fan supports a maximum wind speed of 52 meters per second, ensuring long lasting and stable operation, and has charging and overheating functions. 5. Wide Application: This handheld turbo fan is cordless design, and requires no external power supply, widely used for cleaning computer keyboard, blowing dust, burning charcoal, and blowing snow on car. Spec: Item Type: Powerful Turbo Fan Material: ABS Battery: 2 x Polymer Battery, Battery Capacity: 3000mAh x 2 (built in) Gear: 1 Gear (40000RPM), 2 Gear (80000RPM), 3 Gear (130000RPM) Working Time: 4h (1 Gear) Maximum Wind Speed: 52+M/S PackageList: 1 xTurbo Fan 1 x USB Cable 1 x User Manual