I recently purchased the MICROSOFT Wireless Optical Desktop 800 and I am extremely satisfied with my purchase. The keyboard and mouse are both wireless, which makes my workspace much cleaner and more organized. The keys on the keyboard are responsive and quiet, making typing a breeze. The mouse is comfortable to use and tracks smoothly on any surface. The set up was quick and easy, and I have had no connectivity issues since beginning to use the product. The battery life is impressive, as I have been using the keyboard and mouse regularly for weeks without needing to replace the batteries. Overall, I highly recommend the MICROSOFT Wireless Optical Desktop 800 to anyone in need of a reliable and efficient wireless keyboard and mouse set. The price may be a bit higher than some other options on the market, but the quality and performance of this product make it well worth the investment.