Use your phone's volume rocker buttons to change PowerPoint Presentation slides on your computer/notebook - wireless via Bluetooth.You can also control Windows Media Player and move, click the mouse cursor!Uniquely simple, easy to setup and use. It just works!Instructions are inside this App - Install NOW!After Setup - Use it:- Start a Powerpoint Presentation you have on your computer.- Use your phone's Volume up/down buttons (on the side) to change presentations slides. Use "Volume Up" for next step/slide, "Volume Down" for previous slide.Tip: Set your Android's Screen-timeout to be longer to avoid screen lock in the middle of a presentation. On your Android app list, go to "Settings" > "Display" > "Screen timeout" - you can set it to 30 minutes to be sure.This WMouseXP mobile-app is free and the WMouseXP PC-app has a no-expiry free-demo mode too. PC-app free-demo limit: The PC-app would disconnect from mobile-app after 7 minutes. After disconnection by PC, you can press "Connect" from PC again as many times as you want - no expiry. It just works? Upgrade the PC-app to the Full Version - Only 4.95 USD!