iMac Magic Mouse
You can use Magic Mouse anywhere within range of your computer. When you need to charge the mouse or if you need to connect it again, connect it to your iMac using the included USB-C to Lightning Cable or Lightning to USB Cable.
Here are some common gestures you can use with your Magic Mouse.
Turn on/off: Slide the on/off switch on the bottom of the mouse to turn it on (so green is visible).
Click: Press the upper surface of the mouse to click or double-click.
Secondary click (that is, right-click): Press the left or right side of the mouse to perform a “secondary click.” (To enable right- and left-click, in System Preferences, click Mouse, then select “Secondary click.”) Or press the Control key on the keyboard as you click the mouse.
360º scroll: Brush one finger along the surface to scroll or pan in any direction.
Screen zoom: Hold down the Control key and scroll with one finger to enlarge items on the screen. (To enable screen zoom, in System Preferences, click Accessibility, click Zoom, then select “Use scroll gesture with modifier keys to zoom.”)
Two-finger swipe: Swipe left or right to move through pages, photos, and more.
Customize your mouse. To set preferences such as tracking and scrolling speed, and to enable or customize gestures, click Mouse in System Preferences.