Silvercrest STMS 2219 A1 - Manual (Page 54)

Wireless keyboard with wireless mouse STMS 2219 A1
52 - English
5 800/1600 cpi toggle switch (press briefly)
Standard / media mode toggle switch
(keep pressed for 3 seconds)
6 Tilt wheel (4-way scroll wheel)
Volume control and mute (media mode)
7 Right mouse button
8 Left mouse button
9 Battery level indicator
10 Forward (default)
Next title (media mode)
11 Back (default)
Previous title (media mode)
12 Zoom + (default mode)
Launch Media Player (media mode)
13 Zoom - (default mode)
Play / Pause (media mode)