1.1. Compatible Batteries: The Blower is suitable for Milwaukee M18 18V Li-ion batteries, such as M18 48-11-1852 48-11-1840, 48-11-1815, 48-11-1820, etc.<br> <br> 2.2. 4-Wind Speeds Switching: Please press the button on the side of the machine to adjust the 4 air speeds: 8M/S, 17M/S, 25M/S, 30M/S according to your needs at any time.The maximum wind speed is up to 130,000RPM, please feel to switch the wind speed according to your needs.<br> <br> 3.3. Wide Range of Uses: It is versatile great for indoor, outdoor, garage. Used for computer dusting, keyboard dusting, leaf blower, corner dusting, cleaning snow falling from cars, BBQ blowing to fuel the fire, clothes drying.<br> <br> 4.4. and Light: The jet blower is compact and lightweight and can be carried easily. So it's perfect for outdoor work, camping, barbecues and more.