

If you frequently use multiple devices, Easy Switch is convenient, but there is another feature called Flow that could be very helpful. After you’ve done the initial pairing, all you have to do is press the Easy Switch button to the proper indicator that’s associated with the device you are using, and it is connected. Underneath the mouse is the Easy Switch button, with numbered indicators to show which device the mouse is connected to. The MX Master 3 can be paired with up to three devices over Bluetooth. There’s a battery life indicator in Logitech’s software, but it would be nice if there was a quick view available though the Logitech menu bar icon. I’ve been using the mouse for nearly a month, and I haven’t had to recharge it. Logitech claims that the MX Master 3’s battery can last up to 70 days. Use the Logi Options app to customize all the buttons and scrollwheels. Logitech will probably have a Big Sur update ready when the OS is updated this fall. I tried the app with a developer beta of macOS Big Sur, and I wasn’t able to get the app to recognize the mouse. It saves all of your settings to the cloud (you have to create an account with Logitech), so if you use the mouse with another device (more on that in a bit), your settings come with you. You can customize and also assign application-specific functions to all of the mouse buttons and the scroll wheels with Logitech’s software utility, Logi Options.

Fortunately, you can use the mode button below the scroll wheel to set the mode.

While the switching works well, I prefer free spinning all the time. It switches if you are, for example, quickly scrolling up or down a long webpage. The scroll wheel between the right and left mouse buttons (which itself is a button, too) can automatically switch from ratcheted scrolling to free spinning. For example, if you hold the button down and move the mouse up, it launches Mission Control. The button at the base of the thumb cradle is a gesture button and it works in conjunction with a mouse gesture. Lenty of button on the MX Master 3, and they’re all customizable.
