Did my first speaking presentation with my new Surface Pro 3. Arrived on site and realized I had forgotten the power supply for the tablet. I have a checklist for making sure I have all my equipment when I speak, but I hadn't been feeling well, so I didn't use the checklist as usual. I had fully charged the tablet the day before and put it in the carry case. Presentation was for 1.5 hours. The Surface Pro 3 worked excellent, very crisp and responsive using PowerPoint. At the end of the presentation I still had 81% power which I thought was excellent compared to the laptops I was used to using. So far I am really pleased with the Surface Pro 3 for presenting.