Here's everything you need to give a great presentation-right down to the presentation itself. With 1 GB of built-in memory, the Kensington Wireless Presenter with Laser Pointer and Memory can store hundreds of presentations. And it feels great in the palm of your hand. Easy-to-use 4-button controls and plug and play operation, so you're always ready to present clearly and professionally. Operates on 2 AAA batteries (included with purchase).