Review on RF 2.4GHz USB Rechargeable Green Light Presentation Remote - Wireless Presenter Clicker For Mac/Keynote/PC/PPT by Fred Maki

If you need to turn the presenter off and on several times during your presentation, this may NOT be the best presenter for you. At first this presenter worked great and I had no issues when I had to turn it off and then on after 3 minutes or so. Now when I turn it off and then on again, it may not come back on for 2 minutes or longer. I keep the presenter charged and am only using it twice a week. I will definitely be looking for a different presenter. (I've been using bluetooth and RF presenters for 13 years and this is the first time I've had this kind of issue)