THE MX MASTER 4

The MX Master 4 is a large mouse weighing 150g and measures 128.15mm in length, 88.35mm in width and 50.8mm in height.

I placed the MX Master 2S right next to the MX Master 4 to showcase their similarities.

On the left side of the MX Master 4 we find the gestures button (top left), two thumb buttons, horizontal scroll wheel and the thumb rest with the haptic sense feedback that also has the actions ring on it.

As always at the top we find a mode shift button which as its name suggests is used to change modes.

Once again there's no pinky rest area on the left but there's plenty of space there to provide good grip.

At the front we find the magspeed clickable scroll wheel which is made of  machined steel.

Typically, the USB-C charging port is placed right under the primary buttons.

Turning the MX Master 4 over we find 4 large PTFE feet, the 8K DPI Darkfield sensor, Easy-Switch & connect button (allows the mouse to be connected with up to three different computers) and the on/off switch.

As Logitech points out you can remove the 650mAh lithium-ion battery on your own so opening the housing is very easy.

The Logi Bolt USB-C dongle is tiny.