Enhanced Wind Power, Upgraded Version: TEENO leaf blower cordless is equipped with a high-power copper motor turbine engine and an upgraded high air intake system, which allows for faster heat dissipation, and higher air volume. The air volume of the cordless blower can reach up to 450 CFM, and the speed with the energy concentrator can reach 130 Mph. Compared to traditional blade blowers, it can quickly and efficiently complete tasks, including handling stubborn debris, making cleaning easy Enhanced Battery Power: The leaf blower uses 2*4000mAH battery, Two powerful batteries ensure uninterrupted efficiency in courtyard work.which allows you to enjoy a lightweight and cordless design. The large capacity battery can also increase outdoor usage time. It can improve the efficiency of courtyard work 6 speed modes: The electric leaf blower has 6 speed modes. The dial on the rolling handle allows for variable speed selection, and once set, the speed will automatically be maintained.