Feature: 1. The dust blower supports infinitely variable speed and can control the air volume according to the pressure. 2. The blower has a built-in filter inlet, which can prevent large particles generated during use from clogging the machine. 3. The blower handle is ergonomically designed, it is not easy to slip and easy to hold during use, and is suitable for long-term operation. 4. The blower has a fast running speed, a large air output, and a good blowing and suction effect. 5. This blower can be used for multiple purposes, as a hair dryer or vacuum cleaner, widely used in industrial manufacturing, electrical equipment or household cleaning. Specification: Item Type: Cordless Blower Power Supply Voltage: AC 110-240V Power Supply Type: Rechargeable-lithium battery Battery Specification: 2000mAh Lithium battery Rated Voltage: 21V Rated Input Power: 1200W Vacuum Device: Equipped Air Volume: 3.8m³/min Wind Pressure(Water Column): 1950kpa Revolutions Number: 20000rpm Standard Accessories: Two battery one charge. Package List: 1 x Blower1 x Air Duct1 x Hoop1 x Dust Bag2 x Battery Box1 x Adapter1 x User Manual Note: 1. When operating, the operator should pay attention to whether the accessories are intact, whether the insulated cable is damaged, whether there is aging, etc. After the inspection, plug in the power source before proceeding.2. During cutting and grinding operations, there should be no people and explosives within one meter around, and do not work in the direction of people to prevent casualties.3. When the grinding wheel is used up and needs to be replaced, the power supply must be cut off to replace it, in case the switch is pressed accidentally, causing unnecessary personnel accidents.4. When working with dangerous and flammable materials, more than two fire extinguishers must be equipped to prevent problems. Achieve the principle of safety first and production second.5. If you use it after a long period of 30 minutes, you should stop resting for more than 20 minutes, and work after it cools down. To prevent the temperature from being too high during long‑term use, which is easy to damage and cause industrial accidents.6. When in use, we must use it in accordance with the use specifications and instructions, and perform regular inspections, maintenance, and ensure that the work is in good condition to reduce the occurrence of accidents