Genius Pen Mouse 2.4GHz USB RF Wireless Optical 1200 dpi Pen Mouse, Silver

The Genius Pen Mouse is powered by 1200 dpi tracking technology and is switchable between 400 and 800 dpi. You can tilt it up to 85 degrees to provide a non- compromising surface advantage. Plus with 2.4GHz technology, it gives you an efficient performance with reliable working smoothness at all times