Features:
TouchPad Buttons , Multimedia hotkeys and Wireless technology
Up yo 10 meters interruption -free Receiving
14 Multimedia hot keys that multimedia control is easy.
Build-in optical trackball with control of mouse function.

About Multimedia function:
Email : Call the email function
Back
Forward
Refresh
Calculator
Previous Track
Next Track
Mute
Web home : Go to web home page.
Web favorites : Open my favorite
Play/Pause: Play or pause the media.
Media Stop : stop the media play.
Volume Up / Down.