Silvercrest SFMT 2.4 A1 Operating Instructions And Safety Instructions page 20

SilverCrest SFMT 2.4 A1
You can only change the assignment of the left mouse button if
you have already assigned the "Left click" function to a
different button.
7.2.2 "Sensitivity" tab
Option
CPI1, CPI2 and CPI3
Acceleration
18 - English
Description
These are the settings for the optical
resolution of the wireless mouse which
you can switch using the CPI button
(5).
Use this option to set the speed of the
mouse cursor on the screen.
To achieve more accuracy (e.g. for
image editing applications), check the
"Accuracy Increasing" box.