Contour unimouse Product Manual page 5

Charging
To charge your Unimouse remove the dongle from the extender cable
and plug the Micro USB into the Unimouse. Your Unimouse will charge in
2 hours and you may continue to use your Unimouse while it charges.
Unimouse Wireless
Scroll Lock to Double Click
To change the Scroll lock function to Double click, hold down the cursor speed
button and the middle click at the same time. To switch back, repeat the same
command. *By default, Middle click is set to scroll lock
Double click / Scroll click
Cursor speed (DPI)
/4